# statistics such as unemployment rates, stock market swings, or changes in the housing market

In the news, we are constantly bombarded by statistics such as unemployment rates, stock market swings, or changes in the housing market. A vast majority of the statistical information presented to us is in the form of descriptive statistics. In descriptive statistics, a sample is taken, and values such as mean, median, mode, standard deviation, and variance are determined. These values are used to compare to other samples or are used as a measure of the current state of a population. The use of descriptive statistics is a common practice in the decision-making process in many professional fields.
To decide whether you are going to buy a new car, you will use descriptive statistics in this project to help you make an educated decision. Think about the following example:

According to the manufacturer, the Brillton EX achieves 25 city and 35 highway miles per gallon (MPG). You are, however, dubious. You are able to locate information about the initial Brillton EX models that a consumer protection agency tested. The spreadsheet that follows contains this data. To access the Excel spreadsheet, click here.

There are multiple tabs in this spreadsheet:

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Samples: All of the many samples that were examined are included on this tab. These Brillton EX vehicles were chosen at random. On the highway and in the city, these vehicles’ MPG ratings were evaluated. Descriptive Statistics: The formulas on this page are used to determine the sample data’s mean, median, mode, standard deviation, and variance. Population: For the complete population of Brillton EX models, the mean, median, mode, standard deviation, and variance are listed on this tab. Instructions: