Exam 1 Definitions Part 2

Question 1

Descriptive statistics

Answer 1

Summarize or describe the important characteristics of a known set of population data

Question 2

Inferential statistics

Answer 2

Use sample data to make inferences about a population

Question 3

Center

Answer 3

A representative or average value that indicates where the middle of the data set is located

Question 4

Variation

Answer 4

A measure of the amount that the values vary among themselves

Question 5

Distribution

Answer 5

The nature or shape of the distribution of data

Question 6

Outliers

Answer 6

Sample values that lie very far away from the vast majority of other sample values

Question 7

Time

Answer 7

Changing characteristics of the data over time

Question 8

Frequency table

Answer 8

Lists classes of values,along with frequencies of the number of values that fall into each class

Question 9

Lower class limits

Answer 9

Are the smallest numbers that can actually belong to different classes

Question 10

Upper class limits

Answer 10

Are the largest numbers that can actually belong to different classes

Question 11

Class boundaries

Answer 11

Are the numbers used to separate classes,but without the gaps created by class limits

Question 12

Class width

Answer 12

Is the difference between two consecutive lower class limits or two consecutive class boundaries