# Question: Use the data set from problem 21 of Chapter 3

Use the data set from problem 21 of Chapter 3 on poor quality in the production of electric motors.

a. Find the standard deviation and range to summarize the typical batch-to-batch variability in quality of production.

b. Remove the two outliers and recompute the standard deviation and range.

c. Compare the standard deviation and range values with and without the outliers. In particular, how sensitive is each of these summary measures to the presence of outliers?

a. Find the standard deviation and range to summarize the typical batch-to-batch variability in quality of production.

b. Remove the two outliers and recompute the standard deviation and range.

c. Compare the standard deviation and range values with and without the outliers. In particular, how sensitive is each of these summary measures to the presence of outliers?

**View Solution:**## Answer to relevant Questions

How much variability is there in loan fees for home mortgages? Find and interpret the standard deviation, range, and coefficient of variation for the data in Table 4.3.8. Consider the assets of stock mutual funds, as shown in Table 5.5.3. Answer the parts of the previous problem using the column of assets instead of the rates of return. For the ages: Answer the parts of exercise 1. a. Find the range. b. Find the standard deviation. c. Find the coefficient of variation. d. Compare these three summary measures. What do they tell you about typical salaries in ...a. What is the interpretation of conditional probability in terms of new information? b. Is the conditional probability of A given B always the same number as the conditional probability of B given A? c. How can you find the ...a. Name the three main sources of probability numbers. b. What is the equally likely rule? c. Are you allowed to use someone’s guess as a probability number? d. What is the difference between a Bayesian and a frequentist ...Post your question