Statistics Fall Final 2020-21

The table shows the estimated number of lines of code written by computer programmers per hour when x people are working.

Which model best represents the data?

• y = 47(1.191)^x

• y = 34(1.204)^x

• y = 26.9x – 1.3

• y = 27x - 4

Tags

CCSS.HSF.LE.A.2

What is the correlation coefficient for the data shown in the table?

• 0

• 1

• 4

• 5

Tags

CCSS.HSS.ID.C.8

The chart represents a data set’s given values, predicted values (using a line of best fit for the data), and residual values. Which is the missing residual value?

• g = 2 and h = –1

• g = 28 and h = 39

• g = –2 and h = 1

• g = –28 and h = –39

Tags

CCSS.HSS.ID.B.6B

Ms. Sutton recorded the word counts and scores of the top ten essays in a timed writing contest. The table shows her data.

• Word count tends to decrease as the score decreases.

• Word count tends to increase as the score decreases.

• Word count tends to remain constant as the score decreases.

• Word count has no apparent relationship to the score of the essay.

Tags

CCSS.HSF-LE.A.1B

Plot A shows the number of hours ten girls watched television over a one-week period. Plot B shows the number of hours ten boys watched television over the same period of time.

• There is a gap in both plots.

• There is a gap in Plot A, but not in Plot B.

• The data is spread widely across both plots.

• The data is spread widely across Plot B, but not across Plot A.

Tags

CCSS.6.SP.A.2

The dot plots show the heights of boys and girls at a summer camp.

• Most of the data in each plot are greater than 48.

• Most of the data in each plot are less than 48.

• Most of the data in each plot are around 52.

• Most of the data in each plot are around 54.

Tags

CCSS.3.MD.B.4

Which normal distribution has the greatest standard deviation?

• 
• 
• 
• 

Tags

CCSS.HSS.ID.A.3

A store manager is looking at past jewelry sales to determine what sizes of rings to keep in stock. The list shows the ring sizes purchased by the last ten jewelry customers.

9, 7, 6.5, 7.5, 7, 8, 5, 6, 7.5, 8

What is the variance of the data set? Round to the nearest hundredths.

• 0.40

• 0.72

• 1.15

• 2.14

The graph below shows three different normal distributions.

• Each distribution has the same mean and the same standard deviation.

• Each distribution has the same mean and a different standard deviation.

• Each distribution has a different mean and the same standard deviation.

• Each distribution has a different mean and a different standard deviation.

Tags

CCSS.HSS.ID.A.3

The graph represents the distribution of the number of questions answered correctly on a 50-question math test.

What is the standard deviation of the data?

• 4

• 8

• 12

• 24