Lesson 2

Question 1

A summary of data that shows the number (frequency) of observations in each of several nonoverlapping classes, typically referred to as bins, when dealing with distributions.

Answer 1

Frequency distribution

Question 2

It is a tabular summary of data showing the relative frequency for each bin.

Answer 2

Relative frequency distribution

Question 3

Summarizes the percent frequency of the data for each bin.

Answer 3

Percent frequency distribution

Question 4

A common graphical presentation of quantitative data

Answer 4

Histogram

Question 5

Lack of symmetry

Answer 5

Skewness

Question 6

A variation of the frequency distribution that provides another tabular summary of quantitative data.

Answer 6

Cumulative frequency distribution

Question 7

Average value for a variable.

Answer 7

Mean

Question 8

Value in the middle when the data are arranged in ascending order.

Answer 8

Median

Question 9

Value that occurs most frequently in a data set.

Answer 9

Mode

Question 10

nth root of the product of n values

Answer 10

Geometric mean

Question 11

Found by subtracting the smallest value from the largest value in a data set.

Answer 11

Range

Question 12

Measure of variability that utilizes all the data.

Answer 12

Variance

Question 13

Positive square root of the variance

Answer 13

Standard deviation

Question 14

Measures the standard deviation relative to the mean.

Answer 14

Coefficient of variation