Find the Z-score.
Mean = 22
Standard Deviation: 3.1
x = 29
Statistic Quiz
Quiz
•
Mathematics
•
9th - 10th Grade
•
Hard
Barbara White
FREE Resource
9 questions
Show all answers
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
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
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
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
8.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Joanne's score on a test gives her a Z-score is -1.50. What does this mean?
Joanne didn't take the test yet.
Joanne's test score is 1.50 standard deviations below the average test score.
Joanne did better than 1.50 times her peers.
Joanne's test score, on average, was 1.5 points lower than the other test scores.
9.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
More practice: At a recent invitational, Emmett threw the shotput 43.5 feet with an invite mean of 41 and a SD of 3.
Reese ran the 800 in 2 minutes, 1 second with the mean being 2 minutes 46 seconds and SD of 15 seconds.
What were their Z-scores and who performed better?
Emmett's Z-score was +0.83, Reese's was -3.00. Emmett did better because his Z-score is higher.
Emmett's Z-score was +0.83, Reese's was -3.00 but Reese did better because in track, lower times are better to have
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2.1 Assignment*: Z-Scores
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