1 / 10

Histograms

Histograms. NOT Instagrams. Histograms, what are they?. Histograms are all about groups of numerical data. Histograms show intervals of data (it kind of looks like a bar graph).

lenora
Download Presentation

Histograms

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. Histograms NOT Instagrams

  2. Histograms, what are they? • Histograms are all about groups of numerical data. • Histograms show intervals of data (it kind of looks like a bar graph). • For example, a histogram may show how many people at a Justin Bieber concert were in their teens, twenties, thirties, forties, and fifties.

  3. Bieber Fever

  4. Let’s Make a Histogram • Example  The boys in Mr. Robinson’s Math class earned the following scores on their last exam: 71, 82, 89, 63, 81, 92, 64, 85, 72, 87. • Here are the steps to creating a histogram: • 1. First, we need to figure out what size intervals (or groups) would be appropriate for this data. • We should put our data into groups of: _________________________________________

  5. Let’s Make a Histogram • Make a frequency table that shows how many test scores were in each group. 71, 82, 89, 63, 81, 92, 64, 85, 72, 87

  6. Let’s Make a Histogram • Next, we will make a graph from our table. Begin by drawing two intersecting lines which create the X and Y axis. • Remember, we will have to label both of these axes with units in a second.

  7. Let’s Make a Histogram 4. Use the left side of your paper to set the range to match your table. Ours is from 1-5. Include units. 5. Then label the bottom of your graph with the test score intervals. Give your graph a title! 6. When you graph your data, the bars must touch!

  8. Solve this question: • What is the number of persons below the age of 60 in the histogram below?

  9. One More Question: • If 70 and above is considered a passing grade, how many students passed the math test?

  10. Now, see if you can create a histogram of your data! Don’t forget, your histogram must also come with the frequency table!

More Related