Comparing Random Samples
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Easy
Standards-aligned
Anthony Clark
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
There are 400 students at Polly's school. She surveyed a random sample of 80 students to find their favorite hobby. 19 said they like to read. 30 said they like to be with friends. 8 said they like to do crafts. 23 said they like to play sports. Polly infers that doing crafts is the least popular hobby at her school. Refer to the data table. Polly surveys two more samples. Do the results from these samples support the inference made from the first sample?
Yes, the survey results support the inference that doing crafts is the least popular hobby at Polly's school.
No, the survey results does not support the inference that doing crafts is the least popular hobby at Polly's school.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The dot plot shows a random sample of the number of fish caught and released by 30 participants during a two-day fishing tournament. Select the inference that can be made based on the data collected.
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.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you compare the medians of each data set, who spends more time online?
Seventh graders
Eight graders
Both grades spend an equal amount of time online.
Impossible to determine form the data sets.
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Select all that apply!
A
B
C
D
E
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sample A
Sample B
Sample C
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which method would likely result in a random sample that is representative of the student population?
Surveying all of the teachers at the school
Surveying the students on the Student Council
Surveying 100 students in the cafeteria at lunch
Surveying 50 students who are in the school band.
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