Elementary Statistics Chapter 3

Front 1

Is a value at the center or middle of the data set.

Back 1

Measure of Center

Front 2

The measure of center found by adding the values and dividing by the total number of values.

Back 2

Mean

Front 3

The measure of center that is the middle value when the original data values are arranged in order of increasing magnitude.

Back 3

Median

Front 4

The value that occurs most frequently.

Back 4

Mode

Front 5

The measure of center that is the value midway between the maximum and minimum values in the original data set.

Back 5

Midrange

Front 6

Is the difference between the maximum value and the minimum value.

Back 6

Range

Front 7

Is a measure of variation of values about the mean.

Back 7

Standard Deviation

Front 8

Measure of variation equal to the square of the standard deviation.

Back 8

Variance

Front 9

The vast majority(95%) of sample values lie within two standard deviations of the mean.

Back 9

Range Rule of Thumb

Front 10

For data sets having a distribution that is approximately bell shaped.

Back 10

Empirical Rule

Front 11

The number of standard deviations that a given value x is above or below the mean.

Back 11

Z Score

Front 12

Divide the sorted values into four equal parts.

Back 12

Quartiles

Front 13

Partition the data into 100 groups with about 1% of the values in each group.

Back 13

Percentiles

Front 14

The process of using statistical tools to investigate data sets in order to understand their important characteristics.

Back 14

Exploratory Data Analysis

Front 15

Value that is located very far away from almost all the other values.

Back 15

Outlier

Front 16

Consists of the minimum value, the frist quartile Q1, the median, the third quartile Q3, and the maximum value.

Back 16

5-Number Summary

Front 17

A graph of a data set that consists of a line extending from the minimum value to the maximum value.

Back 17

Boxplot