Answer:
We are given the below frequency table:
Time (sec) Frequency
60 to 119 8
120 to 179 25
180 to 239 14
240 to 299 2
300 to 359 6
Total 55
Therefore, there are 55 individuals included in the summary.
Is it possible to identify the exact values of all of the original service times?
No, it is possible to identify the exact values of all of the original service times because the data values in each class could take on any value between the class limits,
Answer :
Explanation:
In a frequency table , Class frequency refers to the number of observations in each class .
Further explanation :
We are given table summarizing service times (seconds) of dinners at a fast food restaurant.
Time (sec) Frequency
60 - 119 8
120 - 179 25
180 - 239 14
240 - 299 2
300 - 359 6
Total 55
Here frequency is telling the number of individuals have a particular time period (class) of serving.
Thus , the total number of individuals are included in the summary = Total frequency
Since Total frequency = 8+25+14+2+6
= 55
Thus , the total number of individuals are included in the summary = 55
Since each frequency number is representing number of services done in particulate time interval.
Therefore it is impossible to identify the exact values of all of the original service times.
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Keywords:
Frequency table , Class frequency
