Question

The table available below shows the drive through service times (seconds) for lunches at a fast food restaurant. Use the data to construct a histogram. Begin with a
lower class limit of 70 seconds and use a class width of 40 seconds. Does the histogram appear to be skewed? If so, identify the type of skewness.
Click the icon to view the service times data.
Construct the histogram. Choose the correct graph below.
ОА.
Q
Q
69.5 109.5 149.5 189.5 229.5 269.5
69.5 109.5 149.5 189.5 229.5 260.5
Service Time (seconds)
Service Time (seconds)
Q
20
15
10
5-
0
69.5 1095 1495 189.5 2205 209.5
69.5 1095 149.5 189.5 229.5 269.5
Service Time (seconds)
Service Time (seconds)
sunbey
Frequency
15
10-
o
o
Aunbau
Frequency
8.
SK
To
The histogram
so the distribution of the data is

Answer 1

The histogram of service times plotted is right skewed and it is synonymous with the histogram given in option C

The frequency distribution using a class width of 40 :

• CLASS INTERVAL _____ FREQUENCY
• 69.50 - 109.50 ___________ 11
• 110.00 - 149.50 ___________21
• 150.00 - 189.50 ___________9
• 190.00 - 229.50 __________ 5
• 230.00 - 269.50 __________ 3

• The distribution is skewed as the peak of the distribution is not at the center of the distribution

• The distribution has a longer tail to the right of the distribution, Hence, the distribution is Right skewed.

The graph of the histogram which depicts the service times is the option C.

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