
Statistic Quiz
Authored by Barbara White
Mathematics
9th - 10th Grade

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9 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the Z-score.
Mean = 22
Standard Deviation: 3.1
x = 29
2.26
16.45
-2.26
1.26
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If heights of 3rd graders follow a normal distribution with a mean of 52 inches and a standard deviation of 2.5 inches, what is the z score of a 3rd grader who is 47 inches tall?
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A national achievement test is administered annually to 3rd graders. The test has a mean score of 100 and a standard deviation of 15. If Jane's z-score is 1.20, what was her score on the test?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The sign of the z-score indicates whether the location is above(positive) or below(negative) the mean.
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If I tell you that you scored at the 55th percentile on your final exam, you would know:
55% of the class scored the same or worse than you did
You earned a 55% on the exam
You failed the exam
45% of the class scored worse than you did
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The 75th percentile is also know as the
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percentile rank of 74 in the following group of 15 data values? 35, 65, 68, 100, 23, 69, 74, 70, 61, 90, 85, 55, 30, 65, 80
73rd
90th
75th
27th
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