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Chapter 2: Q. 2.9 (page 82)
The following data represent the number of employees at various restaurants in New York City. Using this data, create a histogram.
and
Use as the first interval.
The histogram of the 22 students who were sampled is as follows:
Histogram of number of employee
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Given the following box plots, answer the questions.
a. In complete sentences, explain why each statement is false.
i. Data 1 has more data values above two than Data 2 has above two.
ii. The data sets cannot have the same mode.
iii. For Data 1, there are more data values below four than there are above four.
b. For which group, Data 1 or Data 2, is the value of “7” more likely to be an outlier? Explain why in complete sentences.
Listed are ages for Academy Award winning best actors in order from smallest to largest. a. Find the percentile.
b. Find the percentile.
Use the following information to answer the next six exercises. Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars.
Interquartile range (IQR) = _____ – _____ = _____
Use the following information to answer the next six exercises. Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars.
Third quartile = _______
What is the difference between cumulative relative frequency and relative frequency for each data value?
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