Calculator Tip Sheet - kelly's math stuff



Calculator Tip Sheet

General Tips

CLEAR will clear the home screen

To access a function printed in 2nd color on the face of the calculator,

first push “2nd” key then the desired key.

To access a function printed in green on the face of the calculator,

first push “ALPHA” (green key) then the desired key.

Use the blue arrow keys to maneuver through the menus.

When working on a list:

Use ENTER or down arrow to input a value

Use up/down arrows to move one cell at a time through the list

Use ALPHA up/down arrows to move one page at a time through the list

Use 2nd Quit to exit the edit screen

To enter a list of data:

STAT

EDIT

Enter Data

To clear a list:

arrow up until the list name (ex L1) is highlighted

CLEAR

ENTER

To rearrange a list:

STAT

EDIT

Put list in ascending order Put list in descending order Clear data from list

SORTA SORTD ClrList

list name list name list name

To find min, max, mean, median, sum, product, standard deviation, variance

2nd

STAT (LIST)

MATH

Select function

L1

Calculator Tip Sheet

Chapter 2 & 3

To find the mean, median, quartiles, standard deviation for a single list:

TI 83/older 84 Newer TI84

STAT STAT

CALC CALC

1-Var Stats 1-Var Stats

L1 List: L1

FreqList: leave blank

Calculate (enter)

To find a grouped mean or standard deviation (from a frequency table):

TI 83/older 84 Newer TI84

Enter class midpoints in L1 Enter class midpoints in L1

Enter frequencies in L2 Enter frequencies in L2

STAT STAT

CALC CALC

1-Var Stats 1-Var Stats

L1 , L2 List: L1

FreqList: L2

Calculate (enter)

To generate a histogram for a frequency table:

2nd

STAT PLOT

1 (to select plot 1)

ON (be sure STAT PLOT 2 & 3 are set to off)

Select Histogram

ENTER

Xlist:L1

Freq:L2

GRAPH

To adjust the window for a graph:

WINDOW

Set x min

Set x max

Set x scale

Set y min

Set y max

Set y scale

Leave resolution at 1

Calculator Tip Sheet

Chapter 4

ONE TIME SET UP

To turn “diagnostics” on and be able to see r and r2

2nd 0 (zero)

D (the x-1 button)

Diagnostics on

Enter 2x

To calculate a, b, r, r2:

TI 83/older 84 Newer TI84

Stat Stat

Edit Edit

Enter x’s in L1 and y’s in L2 Enter x’s in L1 and y’s in L2

2nd Quit 2nd Quit

Stat Stat

>Calc >Calc

4:linreg 4:linreg

L1, L2 Xlist: L1

Ylist: L2

FreqList: leave blank

Store RegEQ: leave blank

Calculate

To generate a scatter plot for paired data:

2nd

STAT PLOT

1 (to select plot 1)

ON (be sure STAT PLOT 2 & 3 are set to off)

Select Scatter plot (very first option)

ENTER

Xlist:L1

Freq:L2

Once the STAT PLOT is set up once you do not need to repeat.

With data already entered in L1 and L2

Zoom (middle of very top row on calculator)

9:zoomstat

Calculator Tip Sheet

Chapter 6

To find the mean & standard deviation of a probability distribution:

TI 83/older 84 Newer TI84

Enter x’s in L1 Enter x’s in L1

Enter P(x)’s in L2 Enter P(x)’s in L2

STAT STAT

CALC CALC

1-Var Stats 1-Var Stats

L1 , L2 List: L1

FreqList: L2

Calculate (enter)

To find P(x = #) for a binomial distribution:

TI 83/older 84 Newer TI84

2nd 2nd n = number of trials

DISTR DISTR p = probability success

binompdf binompdf # = value asked about

n, p, # trials: n

p: p

x value: #

Paste

Enter

To find P(x = range of #’s) for a binomial distribution:

TI 83/older 84 Newer TI84

2nd 2nd n = number of trials

STAT (LIST) STAT (LIST) p = probability success

MATH MATH # = values asked about

5:sum 5:sum

2nd 2nd

DISTR DISTR

binompdf binompdf

n, p, {#1, #2, #3…..} trials: n

p: p

x value: {#1, #2, #3…..}

Paste

Enter

To find P(x < #) for a binomial distribution:

TI 83/older 84 Newer TI84

2nd 2nd n = number of trials

DISTR DISTR p = probability success

binomcdf binomcdf # = largest value

n, p, # – 1 trials: n in x list

p: p

x value: # – 1

Paste

Enter

Calculator Tip Sheet

Chapter 7

To find the probability of x being in a specified range:

TI 83/older 84 Newer TI84

2nd 2nd

DISTR DISTR

normalcdf normalcdf

(lower, upper, [pic] lower: lower bound of range

upper: upper bound of range

[pic]: mean

[pic]: standard deviation

Paste

Enter

To find the probability of [pic]being in a specified range, for a group of size n:

TI 83/older 84 Newer TI84

2nd 2nd

DISTR DISTR

normalcdf normalcdf

(lower, upper, [pic],[pic] lower: lower bound of range

upper: upper bound of range

[pic]: mean

[pic]: [pic] standard error

Paste

Enter

To find a score at for specified percentile:

TI 83/older 84 Newer TI84

2nd 2nd

DISTR DISTR

invnorm invnorm

(percentile, [pic] area: percentile (% to the left)

[pic]: mean

[pic]: standard deviation

Paste

Enter

To enter positive infinity:

2nd comma key to access E (scientific notation) 99

To enter negative infinity:

(–) 2nd comma key to access E (scientific notation) 99

Calculator Tip Sheet

Chapter 8

To determine a confidence interval for the population mean, with n < 30, [pic] unknown :

STAT

TESTS

8: Tinterval

Stats

Enter mean, standard deviation, sample size, confidence level

Calculate

To determine a confidence interval for the population mean, with n > 30 or [pic] known:

STAT

TESTS

7: Zinterval

Stats

Enter population standard deviation, mean, sample size, confidence level

Calculate

To determine a confidence interval for the population proportion:

STAT

TESTS

A: 1 PropZInt

Enter x, n, and confidence level x = yes’s n = everyone

Calculate

Calculator Tip Sheet

Chapter 9

To conduct a hypothesis test for the population mean, with n < 30, [pic] unknown :

STAT

TESTS

2: t-test

Stats

Enter hypothesized mean, sample mean, standard deviation, sample size

Symbol in your H1 < > or [pic]

Calculate

To conduct a hypothesis test for the population mean, with n > 30 or [pic] known:

STAT

TESTS

1: z-test

Stats

Enter hypothesized mean, population standard deviation, mean, sample size

Symbol in your H1 < > or [pic]

Calculate

To conduct a hypothesis test for the population proportion:

STAT

TESTS

5: 1 propzint

Enter hypothesized P, x, n

Symbol in your H1 < > or [pic]

Calculate

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