A fast-food restaurant monitors its drive-thru service times electronically to e

Question

A fast-food restaurant monitors its drive-thru service times electronically to ensure that its speed of service is meeting the company's goals. A sample of 16 drive-thru times was recently taken and is shown to the right Speed of Service (Time in Seconds) 75 97 85 80 68 78 94 73 90 83 104 74 106 a. Construct a stem and leaf diagram of the speed of service times b. What range of time might the restaurant say is the most frequent speed of service? a. Complete the stem and leaf diagram below (Use ascending order) b. The range of time between seconds is the most frequent speed of servce.

Explanation / Answer

(a)

Stem                Leaf

6                        8

7                       3 4 5 7 8 8

8                       0 3 5 8

9                       0 4 7

10                     4 6

(b)

The range of time between 70 - 80 seconds is the most frequent speed of service, because in 70 - 80 seconds interval, the frequency = 6, the maximum frequency

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