Statistics Quiz - 10 Multiple Choice Questions

1. A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample the new mean is calculated to be M = 6. The new score was X = 13. (Points: 1)
True
False

2. What is the mean for the following sample of scores?
Scores: 1, 2, 5, 4 (Points: 1)
12
6
4
3

3. A population has a mean of m = 4 and SX=48. How many scores are in this population? (Points: 1)
192
48
12
cannot be determined from the information given

4. For a perfectly symmetrical distribution with a median of 30, what is the value of the mean? (Points: 1)
30
greater than 30
less than 30
cannot be determined from the information given

5. For a positively skewed distribution with m = 30, what is the most likely location for the median? (Points: 1)
equal to 30
greater than 30
less than 30
cannot be determined from the information given

6. A deviation score with a high numerical value (either positive or negative) indicates a score that is relatively close to the mean. (Points: 1)
True
False

7. The sum of the squared deviation scores is SS = 60 for a population of N = 5 scores. What is the variance for this population? (Points: 1)
60/5 = 12
60/4 = 15
5(60) = 300
4(60) = 240

8. Which of the following samples would have the largest value for sample variance? (Points: 1)
1, 3, 5
11, 13, 15
51, 53, 55
All the samples would have exactly the same variance.

9. For the following sample of n = 8 scores, what is the value of the range?
Sample: 2, 3, 4, 4, 5, 7, 8, 10 (Points: 1)
2 points
4 points
8 points
9 points

10. What is the value of SS for the following set of scores?
Scores: 5, 6, 1. (Points: 1)
144
62
14
None of the other choices is correct.

Solution Summary

This solution is comprised of detailed step-by-step calculations and answers of the given problems related to Statistics and provides students with a clear perspective of the underlying concepts.