Ch. 2.3 (Measures Of Center)

Question 1

Sample

Answer 1

A sub collection of data selected from a bigger population

Question 2

Statistic

Answer 2

A numerical measurement describing some characteristic of a sample

Question 3

Percentile

Answer 3

A measure of location which divide a set of data, arranged from smallest to largest (into 100 groups with about 1% of the values in each group)

Question 4

Quartile

Answer 4

A measure of location within a data set, denoted Q1, Q2 (median), and Q3, which divide a set of data into four groups with about 25% of the values in each group

Question 5

Deviation

Answer 5

How much data a sample deviates away from the mean

Question 6

Variance

Answer 6

A number that informs us about the spread of a data set

Question 7

Box Plot

Answer 7

A graph of a data set that helps to visualize the spread of a data set and consists of a line extending from the minimum value to the maximum value and a box with lines drawn at Q1, the median, and Q3

Question 8

Mean

Answer 8

A measurement used to find the center of a data set by adding all of the data values and dividing by the total number of data values

Question 9

Median

Answer 9

A measurement for the center of a data set found by arranging the data set in order from smallest to largest