Statistical Inference

Front

What is the population of Zoie's survey?

Back

CIAA students

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is the sample size in Zoie's report?

Back

70

Tags

CCSS.6.SP.B.5A

Front

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football? Options: 40 students, 200 students, 320 students, 8,000 students

Back

320 students

Tags

CCSS.7.RP.A.3

Front

Polly surveyed 80 students: 19 like to read, 30 like to be with friends, 8 like to do crafts, 23 like to play sports. She infers crafts is the least popular hobby. Do two more samples support this inference?

Back

Yes, the survey results support the inference that doing crafts is the least popular hobby at Polly's school.

Tags

CCSS.7.SP.A.2

Front

Yovani estimates that about 200 students in the school favor playing sports as a hobby. Do you agree?

Back

No, I used a proportion to find the number of students in the school who likely to prefer to play sports. 23/80 = 115/400; 115 students

Tags

CCSS.7.SP.A.2

Front

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.

Back

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.

Tags

CCSS.7.SP.B.4

Front

Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

Back

35 7th graders

Tags

CCSS.7.SP.A.2

Front

Why is the sample of students in a computer class not representative of the entire school regarding computer usage?

Back

Students in computer class are more likely to use computers than other students.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

The dot plot shows a random sample of the number of fish caught and released by 30 participants during a two-day fishing tournament. What inference can be made based on the data collected? Options: On average, most participants caught and released 5 or more fish. More participants caught 6 fish than any other number. The same participants who caught and released 1 fish the first day caught and released 1 fish on the second day. On average, participants caught and released more fish on Day 2.

Back

On average, participants caught and released more fish on Day 2.

Tags

CCSS.7.SP.A.2

Front

_______ is the entire group of objects or individuals considered for a survey.

Back

Population

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1