Inferences Review

The two data sets show the number of days that team members trained before a 5k race. What inference can you draw by comparing the data?

• There is more variability in the number of days that Team A members trained because the IQR for Team A is greater than the IQR for Team B.

• There is more variability in the number of days that Team B members trained because the IQR for Team B is greater than the IQR for Team A.

• Team A members generally trained for more days than Team B members

• Team B members generally trained for more days than Team A members

What inference can you draw by comparing the data?

• There is more variability in the number of days that Team A members trained because the range for Team A is greater than the range for Team B.

• 75% of Team A's training was between 5 and 20 days.

• The interquartile range of Team B is about 20 days.

• Team A generally spends more time training since they have a higher median.

The dot plots show how long it took students in Mr. Chauncey's two science classes to finish their science homework last night. Find the average to make an inference about the data.

• The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

• The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

• The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

• The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

7. A public library asked every 10th person who entered to name the type of book they were getting

• Biased

• Unbiased

Who has a greater median?

• Zach

• Steven

• They have the same median

What is the difference between the medians?

• 16
• 12
• 8
• 4

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Compare the data sets to draw an accurate conclusion.

• DVD players cost less, on average, at Store B

• The range for Store B is greater than the range for store A

• Data for store B has a greater mean, but not greater median than Store A.

• DVD players cost less, on average, at Store A.

Compare the variability of the data for each store.

• The range & IQR are greater at store B as compared to store A.

• There is less variability in prices of DVD players at store A.

• The variability & IQR are greater at store A as compared to store B.

• There is more variability in prices of DVD players at store B.

Which two measures of center are most similar using the data shown?

• mean and median

• mean and mode

• median and mode

• the mean, median, and mode are all the same

What is the difference between the maximum number of hours that Zach and Steven have spent on their homework?

• 0.5

• 0.75

• 2.5

• 3

Tags

CCSS.4.MD.B.4