Comparing Populations

Coach Lantz recorded the number of shots on goal players made during two weeks of a lacrosse scrimmage. How much greater was week 2's mean than week 1's mean? Type your answer as a one-digit number without a label.

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Brazil asks 7 classmates how many erasers and pens they carry in their bags. The mean number of erasers is 10. The mean number of pens is 4. What inference could Brazil make using this data?

• Most of Brazil's classmates carry more pens than erasers in their bags.

• All of Brazil's classmates carry more erasers than pens in their bags.

• Most of Brazil's classmates carry more erasers than pens in their bags.

• Most of Brazil's classmates carry similar amounts of erasers and pens in their bags.

Tags

CCSS.7.SP.B.4

The dot plots show the weights of a random sample of fish from two lakes. Pick the statement that describes the variability of the samples.

• The variability of the weights of the fish in Lake S is greater than the variability of the weights of the fish in Lake R.

• The variability of the weights of the fish in the two lakes are about the same.

• The variability of the weights of the fish in Lake R is greater than the variability of the weights of the fish in Lake S.

• You cannot determine variability based on a dot plot.

Tags

CCSS.7.SP.B.4

If you compare the medians of each data set, who spends more time online?

• Seventh graders

• Eight graders

• Both grades spend an equal amount of time online.

• Impossible to determine form the data sets.

Tags

CCSS.7.SP.B.4

The table shows the finish times of 30 runners in the 100-meter dash. Use the table to identify the inference that can be made by comparing the measures of center.

• Every runner ran faster last year as compared to this year.

• Most runners ran faster last year, on average, as compared to this year.

• The runners ran faster this year, on average, as compared to last year.

• Every runner ran faster this year as compared to last year.

Tags

CCSS.7.SP.B.4

What is the median?

• 62
• 58
• 66
• 60

Tags

CCSS.6.SP.B.5C

What is the minimum value?

• 64
• 58
• 66
• 61

Tags

CCSS.5.G.A.2

What is the maximum value?

• 58
• 66
• 64
• 60

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

• The median for the fruit data is 100. The median for the vegetable data is 50. Fruits have a higher number for calories with greater variation.

• The median for the fruit data is 50. The median for the vegetable data is 100. Fruits have a higher number of calories with greater variation.

• The median for the fruit data is 100. The median for the vegetable data is 50. Vegetables have a higher number of Calories with a greater variation.

• The median for the fruit data is 100. The median for the vegetable data is 50. Fruits have a higher number for calories with less variation.

Tags

CCSS.7.SP.B.4

Which of the following statements is true?

• Group 1 has a greater median number of hours that they watched television. Group 1 has a smaller IQR, so the data is less spread out.

• The mean for group 2 is larger than the mean for group 1.

• The median for group 2 is larger than the median for group 1.

• Both sets of data are symmetric. You should use the mean to compare the measures of center.

Tags

CCSS.7.SP.B.4