Review for Statistics and Probability Test

Determine the mean absolute deviation of the data.
9, 7, 11, 10, 8

• 9

• 6

• 1.2

• 5

Find the MAD:
58, 38, 54, 48, 26, 36

• 43

• 20

• 10

• 12

Find the mean, median, mode, and outlier for the following dataset: 4, 3, 6, 12, 10, 9, 7, 5

• Mean: 7, Median: 6.5, Mode: None, Outlier: None

• Mean: 5, Median: 8, Mode: None, Outlier: None

• Mean: 7, Median: 6.5, Mode: 5, Outlier: 3

• Mean: 10, Median: 4, Mode: 5, Outlier: 3

Find the mean absolute deviation for the following dataset: 4, 3, 12, 10, 6, 7, 9, 5

• 2.5

• 20

• 4.6

• 3.2

Find the range and interquartile range for the following dataset: 4, 3, 6, 12, 10, 9, 7, 5

• Range: 9, IQR: 5

• Range: 8, IQR: 4

• Range: 10, IQR: 5

• Range: 9, IQR: 3

Gerald buys a bag of 7,500 assorted beads online. A random sample of 150 beads contains 10 red beads. Predict the number of red beads in the bag of assorted beads that Gerald bought.

• 500 beads

• 600 beads

• 400 beads

• 450 beads

The dot plots show the shoe sizes of two different groups of people. Compare the shape, center (medians), and spread (ranges).

• Shape: GA is less than 9, GB is between 9 and 10.5; Center: GA 8, GB 9.5; Spread: GA 6.5, GB 3

• Shape: GA is greater than 9, GB is less than 10; Center: GA 6.5, GB 3; Spread: GA 8, GB 9.5

• Shape: GA is between 9 and 10.5, GB is less than 9; Center: GA 9.5, GB 8; Spread: GA 3, GB 6.5

Tell whether each event is impossible, unlikely, as likely as not, likely, or certain. Then tell whether the probability is 0, close to 0, 1/2 , close to 1, or 1.

• Likely; close to 1

• Impossible; 0

• Certain; 1

• As likely as not; 1/2

What is the probability of picking a purple marble from a jar with 10 green, 10 purple, and 5 red marbles.

• 2/5

• 1/5

• 1/10

• 1/2

A spinner has 5 equal sections marked 1 through 5. What is the probability of not landing on an odd number?

• 2/5

• 1/5

• 1/10

• 2/25