Topic 6 Review; 7th grade

Maria records random speeds from three different internet providers in the table. Which company offers the fastest mean downloading speed?

• CityNet

• Able Cable

• Tel-N-Net

Lucy collects data from a random sample of seventh-graders. Out of 40 respondents, 7 attend after-school programs. Of the 200 seventh-graders attending Lucy's school, how many would be expected to attend after-school programs?

Number only

Tricia surveys students in her computer class about time spent on computers by students in her school. Will the survey results from this sample support a valid inference?

• Yes

• No

Caleb is comparing the growth of plants using two different fertilizers.

use the measures of center from the box to make an inference about the data.

• Based on the mean plants in group A grew more

• Based on the mean plants in group B grew more

• Based on the median plants in group A grew more

• Based on the median plants in group B grew more

The dot plot shows a random sample of the number of fish caught and released by 30 participants during a two-day fishing derby.

Use the mean value of each data set to determine which day more fish were caught and released.

• Day 1

• Day 2

• Both days are the same

A school principal wants to know what theme students prefer for the spring dance. There are 150 students in 6th grade, 200 students in 7th grade, and 187 students in 8th grade. Select all the representative samples that can help the principal draw conclusions about which themes the students perfer.

• The students in the 7th grade homerooms

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

• The members of student council

• Students who attended the winter dance

• 50 6th graders, 67 7th graders, 62 8th graders

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

• Mean

• Interquartile range (IQR)

• Median

• Mean Absolute Deviation (MAD)

• Range

Annabel is comparing the distances that two electric cars can travel after the battery is fully charged.

Use the measures of center to make an inference about the data

• Car A travels further

• Car B travels further

• Both cars travel the same distance

The following data set represents the number of students in the Monday swim class

8, 6, 4, 3, 8, 9, 6, 5, 2, 8

What is the min value

The following data set represents the number of students in the Monday swim class

8, 6, 4, 3, 8, 9, 6, 5, 2, 8

What is the value of Q1