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Chapter 2: Q. 68 (page 137)
In a perfectly symmetrical distribution, when would the mode be different from the mean and median?
The mean and median are same, in perfectly symmetrical distribution. Mode depends on the number of samples.
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David County has six high schools. Each school sent students to participate in a county-wide science competition. Table shows the percentage breakdown of competitors from each school, and the percentage of the entire student population of the county that goes to each school. Construct a bar graph that shows the population percentage of competitors from each school.
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.
percentile = _______
In a survey, several people were asked how many years it has been since they purchased a mattress. The results are shown in Table
Maris conducted a study on the effect that playing video games has on memory recall. As part of her study, she compiled the following data:
What is the best estimate for the mean number of hours spent playing video games?
Using the data from Mrs. Ramirez’s math class supplied in Exercise , construct a bar graph showing the percentages
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