Statistics Definitions
Statistics Definitions
Survey- (book, )
Observation-(book, )
Controlled Experiment- (book, )
Grouped Data- (book)… Cumulative Frequency Chart is used because there is too much data to list all individually
Range- (book, )
Absolute Deviation- of an element of a data set is the absolute difference between that element and a given point. Typically the point from which the deviation is measured is a measure of central tendency, most often the median or sometimes the mean of the data set.
Di = | xi − m(X) |
Variance- the variance is a measure of the amount of variation within the values of that variable, taking account of all possible values and their probabilities or weightings
Standard Deviation- It shows how much variation there is from the "average" (mean) (or expected/budgeted value). It helps detect tampering of data. A low standard deviation indicates that the data points tend to be very close to the mean, whereas high standard deviation indicates that the data are spread out over a large range of values.
In addition to expressing the variability of a population, standard deviation is commonly used to measure confidence in statistical conclusions. For example, the margin of error in polling data is determined by calculating the expected standard deviation in the results if the same poll were to be conducted multiple times. The reported margin of error is typically about twice the standard deviation – the radius of a 95% confidence interval. In science, researchers commonly report the standard deviation of experimental data, and only effects that fall far outside the range of standard deviation are considered statistically significant—normal random error or variation in the measurements is in this way distinguished from causal variation. Standard deviation is also important in finance, where the standard deviation on the rate of return on an investment is a measure of the volatility of the investment.
Sample Population vs. Population- (book, )
Normal Distribution- (book, )
Z- score-(book, )
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- competency examples with performance statements
- skew and standard deviation highline college
- probability review memphis
- statistics definitions
- lippincott williams wilkins
- chapter twelve nyu
- standard deviation 物理學系
- suppose that and are estimators of the parameter
- describing and interpreting data
- comparison of svm regression with least square method
Related searches
- philosophy definitions and terms
- word definitions synonyms and antonyms
- synonyms and definitions of words
- definitions of marketing
- definitions of philosophy by philosophers
- definitions of quality
- vocabulary words and definitions worksh
- adjectives definitions and lists
- history definitions and terms
- vocabulary words and definitions printable
- why are definitions important
- definitions and sentences dictionary