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- 1. Multiple ChoiceIf 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?-5-225
- 2. Multiple Choice
Find the Z-score.
Mean = 22
Standard Deviation: 3.1
x = 29
2.26
16.45
-2.26
1.26
- 3. Multiple Choice
Find the mean.
Z-score = -1.4
Standard Deviation: 7
x = 20
29.8
10.2
-21
35
- 4. Multiple Choice
Find the z-score value corresponding if the location is below the mean by 2 standard deviations
+2.00
-2.00
+1.25
-1.00
- 5. Multiple ChoiceThe 75th percentile is also know as themedianthird quartile1st quartile`interquartile range
- 6. Multiple Choice
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
- 7. Multiple Choice
Which of the following is a formula that describes calculating a z-score?
Z = (score - mean) / stand. devation
Z = (mean - score) / stand. dev.
Z = score/stand. dev/ mean
Z = dragonball
- 8. Multiple ChoiceGiven the data set: 1, 2, 3, 6, 9, 11, 45, 102, calculate the percentile rank for 11.7062.572.575
- 9. Multiple Choice
What percentile is 74 in the following group of data (must be in order)?35, 65, 68, 100, 23, 69, 74, 70, 61, 90, 85, 55
60th
90th
75th
27th
- 10. Multiple Choice
Using this data: 70, 96, 74, 87, 89, 82, 80, 90, 81, 91, 95, 68.
find the mean. (Round to the nearest hundredth)
83.58
84
83.08
83
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