Topic 8 Test Part 1

How do you know that this dot plot displays the answers to a statistical question?

• There is variation in the data.

• All data values are the same.

• The data are numerical.

• Students were all asked the same question.

Chad earned the following test scores:

             

70, 85, 100, 87, 80, 70, 95, 91

What is the mean of the data?

Mathematical Equivalence

ON

Chad earned the following test scores:

             

70, 85, 100, 87, 80, 70, 95, 91

What is the median of the data?

Mathematical Equivalence

OFF

Chad earned the following test scores:

             

70, 85, 100, 87, 80, 70, 95, 91

What is the mode of the data?

Mathematical Equivalence

OFF

Chad earned the following test scores:

             

70, 85, 100, 87, 80, 70, 95, 91

What is the range of the data?

Mathematical Equivalence

OFF

Which word makes this inequality true?

Mean < ______

• Mean

• Median

• Mode

• Range

Which word makes this inequality true?

Mode > ______

• Mean

• Median

• Mode

• Range

Which options describe the data below?

Groups:

(a) Does Describe the Data

,

(b) Does NOT Describe the Data

• Outlier at 8

• Gap between 4 and 6

• 9 data values

• Skewed Right

• Skewed Left

• Symmetric

• 30 data values

• Cluster at 0-2

Select three true statements about the line plot shown.

• The mean is 16.

• The range is 7.

• The mode is 16.

• The median is 16.

• The data is mostly symmetrical.

Shelby says that the mean is a better measure of center for the data below. Pat says the median is a better measure of center for the data below. Who do you agree with and why? Explain your answer using the data.