1 / 14

1A.2 Dot Plots and Measures of Dispersion

1A.2 Dot Plots and Measures of Dispersion. Vocabulary. Dot Plot A graph that shows the frequency of values in a data set Measure of Dispersion A measure that describes the spread of a data set. To Create a Dot Plot:. 1) Find the minimum and maximum value in your data set.

christmas
Download Presentation

1A.2 Dot Plots and Measures of Dispersion

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 1A.2 Dot Plots andMeasures of Dispersion

  2. Vocabulary Dot Plot A graph that shows the frequency of values in a data set Measure of Dispersion A measure that describes the spread of a data set

  3. To Create a Dot Plot: 1) Find the minimum and maximum value in your data set. 2) Draw a number line going from the minimum value to the maximum value. 3) Place a dot above the number on the number line for each number in your data set. If there is already a dot above the number, add an additional dot above the existing one. When you are finished there should be a dot on the graph for each piece of data in the data set.

  4. Draw a dot plot of the data and then find the mean, median and mode of the data.

  5. Find the mean, median, mode and range for the dot plot

  6. Directions: Make a double dot plot for the data below. Points in ten baseball games Hall HS: 4, 4, 6, 6, 8, 3, 3, 2, 1, 1 Conard HS: 2, 4, 8, 9, 5, 5, 1, 1, 2, 0

  7. 1.) 2.)

  8. After the first week, the 25-year-old is voted off Show A and the 48-year-old is voted off Show B. How does this affect the mean and range of the remaining contestants on each show?

  9. Standard Deviation The standard deviation of a data set is a measure of how much a typical value in the data set differs from the mean. standard deviation • where n is the number of values in the data set • the symbol represents the mean. It is read as “x-bar”

  10. Find the standard deviation of the ages for Show B in Example 1. Interpret your results.

  11. You are the general manager of an NBA team. You are 35 games into the season and you are planning to sign a new player. You are choosing between player X and player Y. The points they have scored in every game so far are shown in the dot plots below. If you could sign player Y for 4 million dollars, how much more would you be willing to pay player X? Why? Justify your answer with calculations, using the ideas of center and spread. Player X – Points per game Player Y – Points per game

More Related