The following stem-and-leaf chart from the MINITAB software shows the number of

Question

The following stem-and-leaf chart from the MINITAB software shows the number of units produced per day in a factory. 5 6 6 0133569 0236778 8 56 9 00156 3 10 337 (Leave no cells blank, be certain to zero whenever required.) a. How many days were studied? b. How many observations are in the first class? c. What are the minimum value and the maximum value? The minimum is the maximum is d. List the actual values in the fourth row. O 60,61,63,63,65,66,69 61,63,63,60,65,66,69 CO 60,62 64,65,65,66,69 O 60 61,61,63,65,66,69 e. How many observations are in the second row?

Explanation / Answer

3)

a)
mean = 21.87
median = 15.6
Standard deviation = 20.82

b)
Step 1: Subtract the median from the mean: 21.87 – 15.6= 6.27
Step 2: Multiply Step 1 by 3:6.27 * (3) = 18.81
Step 2: Divide by the standard deviation: 18.81 / 20.82 = 0.9034

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