# 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.