2. Which measure of center divides a data set equally, such that half of the dat

Question

2. Which measure of center divides a data set equally, such that half of the data values are above the measure and half of the data values are below the measure? (a) Mean (b) Mode (c) Median (d) Mid-Range 3. Which measure of center should be used with nominal data? (a) Mean (b) Mode (c) Median (d) Mid-Range 4. A measure of variation describes how values in a data set are dispersed around the mean. Which of the following is a measure of variation? (a) Z-score (b) range (c) median (d) percentile (e)mid-range 5. All of the following are properties of the mean EXCEPT: (a) The mean is found by adding all the values in a data set and dividing by the number of values. (b) The mean is affected by outliers. (c) The mean is the halfway point in a data set. (d) The mean is unique and not necessarily one of the data values. 6. If the mean of five values is 64, what is the sum of the values? (a) 69 (b) 12.8 (c) 59 (d) 320 (e)4096 7. The symbol for the mean of a population is: (a) x (b) (c) µ (d) x (e) ² 8. The symbol for the standard deviation of a population is: (a) x (b) (c) µ (d) x (e) ² 9. The symbol for the standard deviation of a sample is: (a) s² (b) (c) µ (d) s (e) ² 10. The symbol for the mean of a sample is: (a) x (b) (c) µ (d) x (e) ² 11. The symbol for the variance of a sample is: (a) s² (b) (c) µ (d) s (e) ² 12. The symbol for the variance of a population is: s² (b) (c) µ (d) s (e) ² 13. Which measure of central tendency can be misleading when a data set contains outliers? (a) Mean (b) Mode (c) Median (d) Range (e) All of the above 14. The number of data values in a population is represented by: (a) N (b) (c) n (d) µ (e) 15. The ____ is the value that occurs with the greatest frequency (a) Mean (b) Median (c) Mode (d)Mid-Range Questions 16 – 23 pertain to the following data below. 17 19 21 18 20 18 19 20 20 21 16. What is the mean? (a) 19.9 (b) 20.4 (c) 19.3 (d) 18.6 17. What is the median? (a) 19.0 (b) 19.5 (c) 20.0 (d) 18.7 18. What is the mode? (a) 18 (b) 19 (c) 21 (d) 20 19. What is the mid-range? (a) 20 (b) 21 (c) 19 (d) 18 20. What is the standard deviation? (a) 1.8 (b) 1.3 (c) 1.7 (d) 19.3 21. What is the variance? (a) 1.2 (b)1.3 (c)1.7 (d)1.4 22. Find the value of Q1 (a) 18 (b) 19 (c) 20 (d) 21 23. Find the value of Q3? (a) 18 (b) 19 (c) 20 (d) 21 24. Which has a better relative position: a score of 75 on a Statistics test with a mean of 60 and a standard deviation of 10 or a score of 36 on a Biology test with a mean of 30 and a variance of 16?

Explanation / Answer

2) Median is correct

3) Mode

4)  Z-score

5)(c) The mean is the halfway point in a data set

6)d) 320 (64*5)

7)c) µ

8) (b)

9) (d) s

Please ask rest question again

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.