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Population, Sample, and Data

Population, Sample, and Data. Objectives. Create a frequency distribution for a given set of data. Construct a histogram from a frequency distribution. Vocabulary. population sample data point frequency distribution relative frequency grouped data histogram.

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Population, Sample, and Data

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  1. Population, Sample, and Data

  2. Objectives • Create a frequency distribution for a given set of data. • Construct a histogram from a frequency distribution.

  3. Vocabulary • population • sample • data point • frequency distribution • relative frequency • grouped data • histogram

  4. Constructing a Frequency Distribution • Choose either individual data points or four to eight evenly spaced intervals (if there are several different values). • Tally the number of data point or each individual point or in each interval. • List the frequency of each individual data point or interval. • Find the relative frequency of each data point (or interval) by dividing the relative frequency by the total number of data points.

  5. Make a frequency distribution to summarize the ages of the students in this class and construct a histogram to illustrate the data.

  6. The weights, in pounds, of 35 packages of ground beef at the Cut Above Market were as follows:

  7. Organize the given data by creating a frequency distribution. (Group the data into six intervals.)

  8. Construct a histogram to represent the data.

  9. In order to examine the effects of a new registration system, a campus newspaper asked freshmen how long they had to wait in a registration line. The frequency distribution on the next slide summarizes the responses. Construct a histogram to represent the data.

  10. The frequency distribution below lists the number of hours per day that a randomly selected sample of teenagers spent watching television.

  11. Where possible, determine what percent of the teenagers spent the following number of hours watching television. • less than 4 hours • not less than 6 hours • at least 2 hours • less than 2 hours • at least 4 hours but less than 8 hours • more than 3.5 hours

  12. Count the number of each color of m&ms and make a frequency distribution to summarize the information and construct a histogram to illustrate the data.

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