Quiz 2 395 Statistical Quality Control-September 10, 2018 You MUST Show Your Wor

Question

Quiz 2 395 Statistical Quality Control-September 10, 2018 You MUST Show Your Work 4. (9 pts) Name the three "Measures of Location" discussed in class. b. 5. (8 pts) In a perfectly symmetrical bell-shaped "normal" distribution a. b. c. d. The mean equals the median The median equals the mode The mean equals the mode All the above 6. (8 pts) According to the empirical rule, if the data form a "bell-shaped" normal distribution, percent of the observations will be contained within 2 standard deviation around the a. 68.27 b. 88.89 c. 93.75 d. 95.45 7. (8 pts) According to the empirical rule, if the data form a "bell-shaped" normal distribution, percent of the observations will be contained within 1 standard deviation around the mean. a. 68.27 b. 88.89 c. 93.75 d. 95.45 8. (9 pts) Name the three "Measures of Variability" discussed in class. a. b. C. , it i (8 pts) If a normal random variable has a mean =- _ and a standard deviation standard normal distribution. 9. a. 1;0 c. 0:0 d. 0; 1 Page 2 of 3

Explanation / Answer

Question 4

Mean, Median and mode are three measures of location.

Question 5

In Perfectly bell shaped normal distribution

mean=median=mode

Answer is

D. All the above

Question 6

Answer is

d. 95.45

Question 7

Answer is

a. 68.27

Question 8

Range, Inter Quartile Range, Variance and standard deviation are measures of variability.

Question 9

Standard normal distribution has mean=0 and sd=1

Answer is

d. 0,1

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