U7 Data & Statistics GA Milestone Review

Which BEST describes the correlation of the two variables shown in the scatter plot?

Note: Strong means the dots are close together. Weak means they are far apart.

Negative means the dots are going down & postive means they are going up.

• weak positive

• strong positive

• weak negative

• strong negative

Answer explanation

The scatter plot shows a strong negative correlation between the two variables, indicating a clear downward trend in their relationship.

Tags

CCSS.HSS.ID.B.5

Match each graph and correlation coefficient (r) to the correct discription.

Note: Srong means the r value is close to 1 or -1 and the dots are very close together!

Groups:

(a) Perfect Positive

,

(b) Weak Postive

,

(c) Strong Negative

,

(d) No correlation

• r = +0.4

• 
• 
• 
• r = +1

• r = -0.7

• r = 0

• 

Tags

CCSS.HSS.ID.C.8

This graph plots the number of wins last year and this year for a sample of professional

football teams.

Based on the line of best fit, which is the BEST prediction for wins this year for a team that won

4 games last year?

• 2

• 4

• 5

• 7

Answer explanation

Based on the line of best fit, the best prediction for wins this year for a team that won 4 games last year is 5, as it falls closest to the trend shown in the graph.

This table shows the average low temperature, in °F, recorded in Macon, GA, and Charlotte, NC,

over a six-day period.

Which conclusion can be drawn from the data?

• The interquartile range of the temperatures is the same for both cities.

• The lower quartile for the temperatures in Macon is less than the lower quartile for the

  temperatures in Charlotte.

• The mean and median temperatures in Macon were higher than the mean and median

  temperatures in Charlotte.

• The upper quartile for the temperatures in Charlotte was less than the upper quartile for the

  temperatures in Macon.

Answer explanation

The mean and median temperatures in Macon were higher than the mean and median temperatures in Charlotte.

Tags

CCSS.7.SP.B.4

A school was having a coat drive for a local shelter. The amount of coats each homeroom

collected for the freshman and sophomore classes are shown.

• Freshman Homerooms: 4, 8, 6, 8, 7, 3

• Sophomore Homerooms: 6, 9, 3, 6, 11, 7

Which statement is true about the average number of coats collected by the freshman and

sophomore homerooms?

Note: Average is the mean. Add the values and divide by the number of values you have. Comapre the answers.

• The freshmen averaged 1 more coat collected than the sophomores.

• The freshmen averaged the same number of coats collected as the sophomores.

• The sophomores averaged 1 more coat collected than the freshmen.

• The sophomores averaged 3 more coats collected than the freshmen.

Answer explanation

The sophomores averaged 1 more coat collected than the freshmen.

A reading teacher recorded the number of pages read in an hour by each of her students. The

numbers are shown below.

44, 49, 39, 43, 50, 44, 45, 49, 51

For this data, which summary statistic is NOT correct?

Remember: Median is the middle value when all values are listed from least to greatest.

• The minimum is 39.

• The lower quartile is 44.

• The median is 45.

• The maximum is 51.

Answer explanation

The lower quartile is 44 because the correct lower quartile value is 44, not 45 as stated in the answer choices.

Tags

CCSS.6.SP.B.5C

A science teacher recorded the pulse of each of the students in her classes after the students had

climbed a set of stairs. She displayed the results, by class, using the box plots shown.

Which class generally had the highest pulse after climbing the stairs?

• Class 1

• Class 2

• Class 3

• Class 4

Answer explanation

Class 3 generally had the highest pulse after climbing the stairs based on the box plots displayed.

Tags

CCSS.7.SP.B.4

Peter went bowling, Monday to Friday, two weeks in a row. He only bowled one game each time he

went. He kept track of his scores below.

Week 1: 70, 70, 70, 73, 75

Week 2: 72, 64, 73, 73, 75

What is the BEST explanation for why Peter’s Week 2 mean score was lower than his Week 1 mean

score?

• Peter received the same score three times in Week 1.

• Peter had one very low score in Week 2.

• Peter did not beat his high score from Week 1 in Week 2.

• Peter had one very high score in Week 1.

Answer explanation

Peter had one very low score in Week 2.