Chapter 17

Skewed distributions can be detected by the order of mean, median, mode.

• True

• False

What is an example of an interval level of measurement?

• Temperature

• Hair Color

• Grade levels

• Age

What is the mode of the following set of numbers?

{2,5,6,7,7,7,9}

• 9

• 6

• 5

• 7

Which type of distribution is shown?

• Normal Distribution

• Positively Skewed Distribution

• Stem-and-leaf plot

• Negatively Skewed Distribution

What are the measures of dispersion?

• Variability, interquartile, and range.

• Standard Score, Semi-interquartile, and mean

• Range, Semi-interquartile range, and Standard Deviation

• Standard Deviation, Skewed Distribution, and Median

• True

• False

What is variance?

• the distance from the highest to the lowest observation

• the root mean square of the deviations from the mean

• the square of the standard deviation

• the score, measure, or category that occurs the most

What is the importance of a scatter plot?

• identify the outliers in a data set.

• describe the extent of the relationship between at least two variables.

• represent data in a graphical format

• to find the data's distribution.

Which of the following more accurately represents the amount of relationship displayed by a correlation of 0.40?

• 16

• 0.20

• 0.16

• 0.4

What is Pearson product-moment correlation?

• where one variable increases as the other consistently increases or decreases proportionately

• indicates the extent of relationship by number between +1.00 and -1.00

• the percentage below a given score

• observations that lie outside the ellipse that would normally encompass them