Sixty-five randomly selected car salespersons were asked the...

Name: Problem 12, Chapter 2: Introductory Statistics
Uploaded: 2020-04-12T02:17:08-08:00
Duration: 1 min 56 s
Channel: Sandile Ndlovu
Description: 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. Complete the table. (TABLE CAN'T COPY)

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. Complete the table. (TABLE CAN'T COPY)

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Key Concepts

Cumulative Frequency

Cumulative frequency is the sum of the frequencies of a category and all categories that come before it in an ordered list. This concept is useful for determining the number of observations below a particular value and is integral in constructing cumulative frequency graphs, which can be used to analyze data trends and medians.

Frequency Distribution

A frequency distribution is a summary of data that shows the number of observations within different intervals or categories. This statistical tool helps in organizing raw data into a more manageable form, allowing one to easily see patterns, such as which categories are most or least common.

Relative Frequency

Relative frequency represents the proportion of the total number of data points that fall within a particular category. It is computed by dividing the frequency of a category by the total number of observations, and it helps in comparing the distribution of data across different groups by normalizing the counts.

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