CCSS.Math.Content.7.SP.A.2

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

True or False: all samples lead to a good prediction about an entire population.

• True
• False

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

In a bag containing 15 billiard balls of three colors - red, yellow and white, Frank picks a ball at random, notes down the color and replaces it. He repeats this experiment 25 times and the results are shown in the table.

• 6 yellow, 9 red, 1 white
• 2 yellow, 5 red, 8 white
• 5 yellow, 8 red, 2 white
• 5 yellow, 10 red, 5 white

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She picks the student in every 5th seat.

• Simple Random
• Systematic Random
• voluntary response
• convenience

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.HSS.IC.B.4

A question that anticipates and accounts for a variety of answers.

• Statistical Question
• Range
• Mean
• Box Plot

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

How many people watched more than 6 hours of TV?

• 10
• 5
• 20
• 17

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

Josefina pulled 3 red marbles, 5 green marbles, 8 pink marbles, and 12 yellow marbles out of a bag. If she repeats this experiment 200 times, about how many pink marbles should she expect to pull from the bag?

• 55
• 57
• 59
• 53

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

Megan surveyed a random sample of 60 students at her school and found that 42 of them ride the bus to school each day. If there are 320 students at Megan’s school, about how many of them ride the bus to school each day?

• 348
• 224
• 188
• 132

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

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 means 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.

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.B.4

What percent of the students sent between 40 and 59 text messages?

• 45%

• 25 text messages

• 45 text messages

• 25%

Tags

CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1