If the equation of regression line is y = 5, then what ...



if the equation of regression line is y = 5, then what result will you take out from it?

Select correct option:

The line passes through origin.

The line passes through (5, 0)

The line is parallel to y-axis.

The line is parallel to x-axis.

 

If the estimating equation is Y = a – b X ,Which of the following is true

Select correct option:

a)The y intercept is’b’

b) Slope of line is negative

c) There is inverse relationship

d) b & c

 

If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance from origin then the value of x-intercept is

Select correct option:

-(3/5)

3/5

11/5

1

because 8=3+5x -> 5=5x- > x=1

 

 

if the equation of regression line is y = 5, then what result will you take out from it?

Select correct option:

The line passes through origin.

The line passes through (5, 0)

The line is parallel to y-axis.

The line is parallel to x-axis.

Sum of three terms whose mean is equal to 90 is

Select correct option:

270

30

Also 90

None of these

 

Which of the following reveals the weakest fact.

Select correct option:

a) The measure of central tendency measures that value which depends only on the extreme values (I Think)

b) The measure of central tendency measures that value in tha data which occurs in the data most frequent times.

c) The measure of central tendency measures the value which has tendency to lie in the central part of the data.

The measure of central tendency measures the distance of values from means

Frequency polygon is …………

Select correct option:

Bar Charts

A line graph

Pareto Chats

None of these

A bar graph uses ……to show data.

Select correct option:

Points

Bars

Lines

Pictures

If the estimating equation is Y = a – b X ,Which of the following is true

Select correct option:

a)The y intercept is’b’

b) Slope of line is negative

c) There is inverse relationship

d) b & c

Geographical data deals with…

Select correct option:

Religion

Height

Income

Regions

If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance from origin then the value of x-intercept is

Select correct option:

-(3/5)

3/5

11/5

1

A data in which we study about Regions is called ……

Select correct option:

Qualitative

Quantitative

Geographical

Chronological

If the median of an arrangement of numbers is equal to the mean of its middle terms then the arrangement contains

Select correct option:

Odd number of terms

Even number of terms

Unlimited number of terms

Prime number

Question No. 1:

Class width of the given data is defined as ratio of

Select correct option:

1: Range and number of values in the given data

2: Range and the number of classes

3: Range and mid point/value

4: None of these

Question No. 2:

For the regression line: Y= -X + 5, y-intercept is

Select correct option:

1: -5

2: 5

3: -1

4: 1

Question No. 3:

For the regression line:Y= a+bX,'a' is the

Select correct option:

1: Slope of the regression line

2: y-intercept

3: x-intercept

4: none of these

Question No. 4:

Different ways of organizing univariate categorical data are

Select correct option:

1: The Summary Table

2: Bar and Pie Charts, the Pareto Diagram

3: Contingency Tables

4: Only option 1 & 2

Question No. 5:

The rate of change along the regression line is called

Select correct option:

1: Linear regression*

2: Non Linear regression

3: Slope

4: Curve

Question No. 6:

If the graph is very much scattered, then what can be the suitable value of r?

Select correct option:

1: r = - 0.9

2: r = -0.5

3: r = 0.1

4: r = 0.8

Question No. 7:

In scatter diagram, clustering of points around a straight line indicates

Select correct option:

1: Linear regression

2: Non-linear regression

3: Curvilinear linear regression

4: Both (a) and (b)*

Question No. 8:

If the standard deviation of a population is 9, the population variance is

Select correct option:

1: 3

2: 9

3: 21.35

4: 81

Question No. 9:

The coefficient of variation for a set of annual incomes is 18%; the coefficient of variation for the length of service with the company is 29%. What does this indicate?

Select correct option:

1: More dispersion in the distribution of the incomes compared with the dispersion of their length of service

2: More dispersion in the lengths of service compared with income *

3: Dispersion in the two distributions (income and service) cannot be compared using percents

4: Dispersions are equal

Question No. 10:

Which of the following is the better average?

Select correct option:

1: arithmetic mean

2: geometric mean

3: harmonic mean

4: all above

Question No. 11:

FREQUENCY Function calculates how often values occur within a range of values.

Select correct option:

1: True

2: False

Question No. 12:

Which of the following correlation coefficients represents the weakest correlation between two variables?

Select correct option:

1: 0.15

2: -0.15

3: 0.02

4: -1.00

Question No. 13:

The frequency of the required class can be obtained from the cumulative frequency

Select correct option:

1: by subtracting the cumulative frequency of the relative class from the next cumulative frequency

2: by subtracting the cumulative frequency of the relative class from the total frequency

3: by subtracting the cumulative frequency of the relative class from the previous cumulative frequency

4: None of these *

Question No. 14:

If the value of r is 0.8 ,then the coefficient of determination is

Select correct option:

1: 67%

2: 64%

3: 80%

4: 75%

Question No. 15:

If the dependent variable increases with the independent variable then the coefficient of correlation is

Select correct option:

1: 0 to -1

2: 0 to – 0.5

3: 0 to -2

4: 0 to 1

Question No. 16:

In negatively skewed distribution the true relation is

Select correct option:

1: A.M < MEDIAN < MODE

2: A.M > MEDIAN > MODE

3: A.M = MEDIAN = MODE

4: None of these

Question No. 17:

The coefficient of variation for a set of annual incomes is 18%; the coefficient of variation for the length of service with the company is 29%. What does this indicate?

Select correct option:

1: More dispersion in the distribution of the incomes compared with the dispersion of their length of service

2: More dispersion in the lengths of service compared with income* 

3: Dispersion in the two distributions (income and service) cannot be compared using percents

4: Dispersions are equal

Question No. 18:

The syntax intercept (known y’s, known x’s ) gives

Select correct option:

1: x- intercept

2: y- intercept

3: Both (a) and (b) are same

4: None of these*

Question No. 19:

Trimmed mean is the mean of ....

Select correct option:

1: The remaining data

2: The middle data

3: The data from last

4: None of these

NOTE: * stands for Doubtful Answers

Question No. 1:

Sum of three terms whose mean is equal to 90 is

Select correct option:

1: 270

2: 30

3: Also 90

4: None of these

Question No. 2:

Geographical data deals with…

Select correct option:

1: Religion

2: Height

3: Income

4: Regions

Question No. 3:

If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance

from origin then the value of x-intercept is

Select correct option:

1: -(3/5)

2: 3/5

3: 11/5

4: 1*

Question No. 4:

A data in which we study about Regions is called ……

Select correct option:

1: Qualitative

2: Quantitative

3: Geographical

4: Chronological

Question No. 5:

If the median of an arrangement of numbers is equal to the mean of its

middle terms then the arrangement contains

Select correct option:

1: Odd number of terms

2: Even number of terms

3: Unlimited number of terms

4: Prime number

Question No. 6:

A bar graph uses ……to show data.

Select correct option:

1: Points

2: Bars

3: Lines

4: Pictures

Question No. 7:

Frequency polygon is …………

Select correct option:

1: Bar Charts

2: A line graph

3: Pareto Chats

4: None of these

Question No. 8:

Geographical data deals with…

Select correct option:

1: Religion

2: Height

3: Income

4: Regions(correct option)

NOTE: * Stands for doubtful Answers.

Question No. 1:

If the equation of regression line is y = 5, then what result will you take out from it?

Select correct option:

1:The line passes through origin.

2: The line passes through (5, 0)*

3: The line is parallel to y-axis.

4: The line is parallel to x-axis.

Question No. 2:

Sum of three terms whose mean is equal to 90 is

Select correct option:

1: 270

2: 30

3: Also 90

4: None of these

Question No. 3:

Which of the following reveals the weakest fact.

Select correct option:

1:The measure of central tendency measures that value which depends only on the extreme values*

2: The measure of central tendency measures that value in tha data which occurs in the data most frequent times.

3: The measure of central tendency measures the value which has tendency to lie in the central part of the data.

4: The measure of central tendency measures the distance of values from means

Question No. 4:

Frequency polygon is …………

Select correct option:

1: Bar Charts

2: A line graph

3: Pareto Chats

4: None of these

Question No. 5:

A bar graph uses ……to show data.

Select correct option:

1: Points

2: Bars

3: Lines

4: Pictures

Question No. 6:

If the estimating equation is Y = a – b X ,Which of the following is true

Select correct option:

1: The y intercept is’b’

2: Slope of line is negative

3: There is inverse relationship

d) b & c *

Question No. 7:

Geographical data deals with…

Select correct option:

1: Religion

2: Height

3: Income

4: Regions

Question No. 8: 

If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance from origin then the value of x-intercept is

Select correct option:

1: -(3/5)

2: 3/5

3: 11/5

4: 1

Question No. 9:

A data in which we study about Regions is called ……

Select correct option:

1: Qualitative

2: Quantitative

3: Geographical

4: Chronological

Question No. 1:

If the median of an arrangement of numbers is equal to the mean of its middle terms then the arrangement contains

Select correct option:

1: Odd number of terms

2: Even number of terms

3: Unlimited number of terms

4: Prime number

NOTE: * Stands for doubtful Answers.

Question # 1 of 10 ( Start time: 06:34:59 PM ) Total Marks: 1

………use the division of a circle into different sectors. Select correct option:

| |Line graph |

| |Sector graphs |

| |Frequency Polygon |

| |Conversion Graphs |

Question # 2 of 10 ( Start time: 06:36:03 PM ) Total Marks: 1

If Mean of X = 20.143 , Mean of Y = 6 , and Slope = 0.181176 Then intercept of the data is Select correct option:

| |4.51 |

| |3.45 |

| |2.35 |

| |3.58 |

Question # 3 of 10 ( Start time: 06:36:48 PM ) Total Marks: 1

The measurement of measure of degree of to which any two variables vary together is called Select correct option:

| |a)Regression Coefficient |

| |b)Correlation |

| |c)Both (a) and (b) |

| |d)None of these* |

Question # 4 of 10 ( Start time: 06:37:37 PM ) Total Marks: 1

Analysis of Variance (ANOVA) is a test for equality of: Select correct option:

| |variances |

| |means |

| |proportions |

| |only two parameters |

Question # 5 of 10 ( Start time: 06:38:04 PM ) Total Marks: 1

For some data you are given Maximum value = 96 , Minimum Value = 23 , Range = 73, number of classes selected between 5 and 15 Then class width will be Select correct option:

| |15 |

| |8 |

| |5 |

| |All options 1,2 ,3 are possible |

Question # 6 of 10 ( Start time: 06:39:08 PM ) Total Marks: 1

If strength of the association between X and Y is very weak, then r = ? Select correct option:

| |r = - 1 |

| |r = 0* |

| |r = 1 |

| |r = 2 |

Question # 7 of 10 ( Start time: 06:39:36 PM ) Total Marks: 1

The moving averages of the Prices 90,70,30,110 are Select correct option:

| |63.33, 70 |

| |73.33, 80 |

| |45.45, 68 |

| |65.50, 75 |

Question # 8 of 10 ( Start time: 06:40:45 PM ) Total Marks: 1

Let, Variation (Y) = n*Sum(y^2) – [Sum[pic]]^2 Variation (X) = n*Sum(x^2) – [Sum(x)]^2 Then, the following formula of slope b = {Sum(X*Y) – [ Sum(x)*Sum[pic]] }/ Variation (Y) Select correct option:

| |a)for the regression line Y on X |

| |b)for the regression line X on Y |

| |c)Both (a) and (b) |

| |d)None of these |

Question # 9 of 10 ( Start time: 06:41:19 PM ) Total Marks: 1

Class width of the given data is defined as ratio of Select correct option:

| |Range and number of values in the given data |

| |Range and the number of classes |

| |Range and mid point/value |

| |None of these |

Question # 10 of 10 ( Start time: 06:41:55 PM ) Total Marks: 1

A simple linear regression model is an equation that describes the straight-line relationship between a dependent variable and an independent variable. Select correct option:

| |True |

| |False |

The regression equation should only used

Select correct option:

When there is significant linear correlation

When there is significant mluticorrelation

When there is significant quadratic correlation

When there is significant simple correlation

In the central tendency Mean, Median and Mode

Select correct option:

Mean is better than Median

Median is better than Mode

Mean is better than Mode

All of these are true

The degree to which numerical data tend to spread about an average is called

Select correct option:

The dispersion

Standard deviation

Correlation

None of these

…………..graphs are similar to bar graphs.

Select correct option:

column

line

conversion

sector

A pattern of variation of a time series that repeats every year is called:

Select correct option:

Cyclical

Seasonal

Trend

Secular

If the values of variables are increasing or decreasing in the same direction then such kind of correlation is referred as

Select correct option:

Zero Correlation

Perfect Correlation

Positive Correlation

Negative Correlation

The moving averages of the Prices 55,60,65,70 are

Select correct option:

70, 75

60, 65

65,65

70,60

The best measure of variation is

Select correct option:

Range

Quartile deviation

Variance

Coefficient of variance

In the scatter diagram, clustering of points around a straight line indicates

Select correct option:

linear regression

non-linear regression

curvilinear regression

none of these

Ms. Christian calculated a correlation coefficient of .75. Which of the following reflects the best interpretation of this?

Select correct option:

Weak negative.

Strong negative.

Weak positive.

Strong positive.

|Class width of the given data is defined as ratio of |

|[pic] Select correct option: |

| |

|[pic] |

|Range and number of values in the given data |

| |

|[pic] |

|Range and the number of classes |

| |

|[pic] |

|Range and mid point/value |

| |

|[pic] |

|None of these |

| |

|For the regression line: Y= -X + 5, y-intercept is |

|[pic] Select correct option: |

| |

|[pic] |

|-5 |

| |

|[pic] |

|5 |

| |

|[pic] |

|-1 |

| |

|[pic] |

|1 |

| |

|For the regression line:Y= a+bX,'a' is the |

|[pic] Select correct option: |

| |

|[pic] |

|Slope of the regression line |

| |

|[pic] |

|y-intercept |

| |

|[pic] |

|x-intercept |

| |

|[pic] |

|none of these |

| |

|Different ways of organizing univariate categorical data are |

|[pic] Select correct option: |

| |

|[pic] |

|The Summary Table |

| |

|[pic] |

|Bar and Pie Charts, the Pareto Diagram |

| |

|[pic] |

|Contingency Tables |

| |

|[pic] |

|Only option 1 & 2 |

| |

|The rate of change along the regression line is called |

|[pic] Select correct option: |

| |

|[pic] |

|Linear regression |

| |

|[pic] |

|Non Linear regression |

| |

|[pic] |

|Slope |

| |

|[pic] |

|Curve |

| |

|If the graph is very much scattered, then what can be the suitable value of r? |

|[pic] Select correct option: |

| |

|[pic] |

|r = - 0.9 |

| |

|[pic] |

|r = -0.5 |

| |

|[pic] |

|r = 0.1 |

| |

|[pic] |

|r = 0.8 |

| |

|In scatter diagram, clustering of points around a straight line indicates |

|[pic] Select correct option: |

| |

|[pic] |

|a) Linear regression |

| |

|[pic] |

|b) Non-linear regression |

| |

|[pic] |

|c) Curvilinear linear regression |

| |

|[pic] |

|d) Both (a) and (b) |

| |

|If the standard deviation of a population is 9, the population variance is |

|[pic] Select correct option: |

| |

|[pic] |

|3 |

| |

|[pic] |

|9 |

| |

|[pic] |

|21.35 |

| |

|[pic] |

|81 |

| |

|The coefficient of variation for a set of annual incomes is 18%; the coefficient of variation for the length of service with the |

|company is 29%. What does this indicate? |

|[pic] Select correct option: |

| |

|[pic] |

|More dispersion in the distribution of the incomes compared with the dispersion of their length of service |

| |

|[pic] |

|More dispersion in the lengths of service compared with income |

| |

|[pic] |

|Dispersion in the two distributions (income and service) cannot be compared using percents |

| |

|[pic] |

|Dispersions are equal |

| |

|Which of the following is the better average? |

|[pic] Select correct option: |

| |

|[pic] |

|arithmetic mean |

| |

|[pic] |

|geometric mean |

| |

|[pic] |

|harmonic mean |

| |

|[pic] |

|all above |

| |

|FREQUENCY Function calculates how often values occur within a range of values. |

|[pic] Select correct option: |

| |

|[pic] |

|True |

| |

|[pic] |

|False |

| |

|Which of the following correlation coefficients represents the weakest correlation between two variables? |

|[pic] Select correct option: |

| |

|[pic] |

|0.15 |

| |

|[pic] |

|-0.15 |

| |

|[pic] |

|0.02 |

| |

|[pic] |

|-1.00 |

| |

|The frequency of the required class can be obtained from the cumulative frequency |

|[pic] Select correct option: |

| |

|[pic] |

|by subtracting the cumulative frequency of the relative class from the next cumulative frequency |

| |

|[pic] |

|by subtracting the cumulative frequency of the relative class from the total frequency |

| |

|[pic] |

|by subtracting the cumulative frequency of the relative class from the previous cumulative frequency |

| |

|[pic] |

|None of these |

| |

|If the value of r is 0.8 ,then the coefficient of determination is |

|[pic] Select correct option: |

| |

|[pic] |

|67% |

| |

|[pic] |

|64% |

| |

|[pic] |

|80% |

| |

|[pic] |

|75% |

| |

|If the dependent variable increases with the independent variable then the coefficient of correlation is |

|[pic] Select correct option: |

| |

|[pic] |

|0 to -1 |

| |

|[pic] |

|0 to – 0.5 |

| |

|[pic] |

|0 to -2 |

| |

|[pic] |

|0 to 1 |

| |

|In negatively skewed distribution the true relation is |

|[pic] Select correct option: |

| |

|[pic] |

|A.M < MEDIAN < MODE |

| |

|[pic] |

|A.M > MEDIAN > MODE |

| |

|[pic] |

|A.M = MEDIAN = MODE |

| |

|[pic] |

|None of these |

| |

|The coefficient of variation for a set of annual incomes is 18%; the coefficient of variation for the length of service with the |

|company is 29%. What does this indicate? |

|[pic] Select correct option: |

| |

|[pic] |

|More dispersion in the distribution of the incomes compared with the dispersion of their length of service |

| |

|[pic] |

|More dispersion in the lengths of service compared with income |

| |

|[pic] |

|Dispersion in the two distributions (income and service) cannot be compared using percents |

| |

|[pic] |

|Dispersions are equal |

| |

|The syntax intercept (known y’s, known x’s ) gives |

|[pic] Select correct option: |

| |

|[pic] |

|a)x- intercept |

| |

|[pic] |

|b)y- intercept |

| |

|[pic] |

|c)Both (a) and (b) are same |

| |

|[pic] |

|d)None of these |

| |

|Trimmed mean is the mean of .... |

|[pic] Select correct option: |

| |

|[pic] |

|The remaining data |

| |

|[pic] |

|The middle data |

| |

|[pic] |

|The data from last |

| |

|[pic] |

|None of these |

| |

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