Populations, Samples, & Inferences

Maria records random speeds from 3 Internet companies in the table.

Which company offers the fastest (smallest) mean downloading speed?

• CityNet

• Able Cable

• Tel-N-Net

Tags

CCSS.6.SP.B.5C

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. There are 200 total 7th graders. How many would be expected to attend afterschool programs?

Make an equivalent fraction to solve:  $\frac{7}{40}=\frac{?}{200}$  

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders

Camira is comparing the growth of plants with 2 different fertilizers.

Which statements about the box plots are true?

There are 2 correct answers.

• Group B has a greater median.

• Group A has a greater minimum.

• Group B has a greater maximum.

• Group A has a greater mean.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

The captain of the basketball team wants to determine where the team should go for their end-of-season celebration.

Which of the following is a representative (good) sample?

• The students in her class

• The players in the starting lineup

• Players whose names are randomly selected from a hat

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Which term is used to find the variability in a number set?

Variability: how much something changes

• Mean

• Median

• Range

• Mode

Tags

CCSS.6.SP.A.3