Mario compares random download times of movies from three different services using the table. Which service provided the fastest mean download speed?

Tags

CCSS.7.SP.A.1

CCSS.7.SP.B.4

Harry collects data from a random sample of seventh-graders. Out of 25 respondents, 10 ride the bus to school. Of the 150 seventh-graders who attend Harry’s school, how many would be expected to ride the bus to school?

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

To determine whether students want a new school mascot, Abby surveys every 25th student from an alphabetized list of students in the school. Will the survey results from this sample support a valid inference?

• Yes, because the sample is random and likely representative of the student body.

• No, because the sample is not random and may not be representative.

• Yes, because every student is surveyed.

• No, because only students with certain last names are included.

Tags

CCSS.7.SP.A.1

Carrie is comparing the growth of plants under natural and artificial light sources. Part A: Which measure of center would best help Carrie make an inference about the data from the box plots?

• Based on the mean, plants in Group P grew more than plants in Group Q.

• Based on the mean, plants in Group Q grew more than plants in Group P.

• Based on the median, plants in Group P grew more than plants in Group Q.

• Based on the median, plants in Group Q grew more than plants in Group P.

Tags

CCSS.7.SP.B.4

Carrie is comparing the growth of plants under natural and artificial light sources.

Part B
Which light source shows greater variability in plant growth according to the box plots?

• Natural light

• Artificial light

• Both have the same variability

• Cannot be determined from the box plots

Tags

CCSS.7.SP.B.4

The dot plot shows a random sample of the number of migrating geese flocks observed by 25 participants during a two-day hike.

Use the mean value of each data set to make an inference about the number of flocks observed each day?

• On average, most participants observed fewer flock on day 2.

• More participants observed 6 or more flocks on day 2.

• Both days had the same mean,

• The mean cannot be determined from the dot plot.

Tags

CCSS.7.SP.A.2

The drama teacher wants to determine whether more students at the school would attend a comedy or a musical performance. Select all the following that would NOT help the drama teacher draw conclusions about which performance more students would attend.

• Students who do not act

• Every 4th student selected from an alphabetical list of all students at the school

• Students who are in drama club

• Students who are in theater class

• The same number of students from each grade whose names are randomly selected from a hat

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Select all the measures of center that can be used to compare two data sets.

• Mean

• Interquartile range

• Median

• Mean Absolute Deviation (MAD)

• Range

Tags

CCSS.7.SP.B.4

Andy is comparing how long two tablets can be used after being fully charged.

Part A
Use the measures of center to make an inference about the day.

(a)   can be used longer than ​ (b)   after being fully charge.

• Tablet A
• Tablet B

Tags

CCSS.7.SP.B.4

Andy is comparing how long two tablets can be used after being fully charged. Based on the data, which tablet performs most consistently?

• Tablet A, because the measures of center are smaller for Tablet A than for Tablet B.

• Tablet B, because the measures of center are smaller for Tablet B than for Tablet A.

• Tablet A, because the measures of variability are smaller for Tablet A than for Tablet B.

• Tablet B, because the measures of variability are smaller for Tablet B than for Tablet A.

Tags

CCSS.7.SP.B.4