1. Chapter 1 review “Exploring Data”
AP Statistics
Chapter 1 review
“Exploring Data”

2. From which statistic can you recover the total value of the data set, if you know how many entries there are?
Range
Median
Variance
Mean 8 1 2 3 4 5 6 7 8 9 10 11 12 13

3. If a group of high school biology students were given an anatomy exam developed for medical school students, it is likely that the _____ would be larger than the _____.
mode; median
mode; mean
median; mean
mean;median 10 1 2 3 4 5 6 7 8 9 10 11 12 13

4. Which of the following is not affected by the actual magnitude of every value in the data set?
Arithmetic mean
Median
Range
Standard deviation 10 1 2 3 4 5

5. If 400 test scores are distributed with a mean of 150 and s = 9, the variance of the test scores is:
2.67 3
44.44 81 10 1 2 3 4 5

6. A set of 10 scores has a mean of 50 and s = 8
A set of 10 scores has a mean of 50 and s = 8. If you add 2 points to every score, the new standard deviation will be: 6 8 10
Cannot be determined 1 2 3 4 5

7. A set of 10 scores has a mean of 50 and s = 8
A set of 10 scores has a mean of 50 and s = 8. If you double each score, the new “s” will be: 4 8 16 64 10 1 2 3 4 5

8. Which of the following concepts is out of place with the other three?
Mean
Standard deviation
Range
IQR 10 1 2 3 4 5

9. If there are 20 entries in an ordered list of data, the median will be the 10th entry.
True
False 10 1 2 3 4 5

10. Which numerical summary is better for skewed data?
5-number summary
Mean, standard deviation
Center, spread, shape
1.5*IQR 10 1 2 3 4 5

11. “Arithmetic mean” is to “central tendency” as “standard deviation” is to _________.
Average
Variability
Median
Range 10 1 2 3 4 5

12. Two classes took the same exam. Class M’s scores showed s = 6
Two classes took the same exam. Class M’s scores showed s = 6.4 and class Q’s s = Which is true?
Class M had a higher average
Variance of class Q is 2
Class Q is more alike than class M
Class M is 16 times more dispersed 10 1 2 3 4 5

13. Given scores: 2, 6, 4, 3, 5. How far, on average, do the scores deviate from the mean?
1.2 points
4.0 points
0 points
6.0 points 10 1 2 3 4 5