histograms summary data
Skip this Video
Download Presentation
Histograms & Summary Data

Loading in 2 Seconds...

play fullscreen
1 / 31

Histograms Summary Data - PowerPoint PPT Presentation

  • Uploaded on

Histograms & Summary Data. Histograms & Summary Data. Summarizing large of amounts of data in two ways: Histograms: graphs give a pictorial representation of the data Numerical summaries: gives snapshot of the data overall: “Average”, “Mode”, “Median”, etc. Histograms & Summary Data.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'Histograms Summary Data' - Anita

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
histograms summary data2
Histograms & Summary Data
  • Summarizing large of amounts of data in two ways:
    • Histograms: graphs give a pictorial representation of the data
    • Numerical summaries: gives snapshot of the data overall:
      • “Average”, “Mode”, “Median”, etc
histograms summary data3
Histograms & Summary Data
  • Microsoft Excel has several tools that allows to summarize data:
    • sorting
    • Maximum
    • Minimum
    • range (difference between max and min)
    • mean (average)
    • grouping data
    • plotting a histogram
histograms summary data4
Histograms & Summary Data
  • Sorting in Excel

Click on “Data”

Click on “Sort”

histograms summary data5
Histograms & Summary Data
  • Sorting in Excel

Store the data to be sorted in a list by columns

Click to sort the column from low to high and vice versa

Click “OK”

histograms summary data6
Histograms & Summary Data
  • Sorting in Excel
  • Ex: On the class webpage, go to the file NBAPlayerHeights.xls
  • File contains data for the top ten player heights (in inches) by team during the 1990-91 season
histograms summary data7
Histograms & Summary Data
  • Use the Sort tool in Excel to list all the player heights from smallest to largest

First, highlight the data you wish to sort

Go to “Data” and click “Sort”

Click “Ascending”, then click “OK”

histograms summary data8
Histograms & Summary Data
  • What is the smallest height?
    • Answer: 67 inches
  • What is the largest height?
    • Answer: 91 inches
histograms summary data9
Histograms & Summary Data
  • MIN and MAX functions find the minimum value(s) and maximum value(s) in a list
  • The range is the maximum minus the minimum
  • AVERAGE function finds the average or mean
  • SUM function adds numbers in a list
histograms summary data10
Histograms & Summary Data
  • Excel also has a Histogram tool
  • This function separates data into bins
  • The function counts how much data lies within each bin
  • You can (and should) define the size of the bin prior to opening the function
histograms summary data11
Histograms & Summary Data
  • A histogram organizes data into groups by counting how much data is in each group
    • The groups are sometimes called “bins”
    • The number of observations in each “bin” is called the frequency
histograms summary data12
Histograms & Summary Data
  • Installing the Histogram feature:

Click on “Tools” and then on “Add-Ins”

histograms summary data13
Histograms & Summary Data
  • Installing the Histogram feature:

Click on these boxes

Hit “OK” to install. It will take a few moments for these packs to install

histograms summary data14
Histograms & Summary Data
  • Creating a Histogram

Click on “Tools”

Click “Data Analysis”

histograms summary data15
Histograms & Summary Data
  • Creating a Histogram

Click on “Histogram”

Click “OK”

histograms summary data16
Histograms & Summary Data
  • Creating a Histogram:

Cells where your data is stored goes here

Your Bin Limits or Bin Widths go here. You need to type these beforehand in your worksheet

Choose the cell you want the frequencies of your bins to be displayed in Excel

histograms summary data17
Histograms & Summary Data
  • Using NBAPlayerHeights.xls, create a histogram with bin widths of 5 starting at 65 inches
histograms summary data18
Histograms & Summary Data
  • Create Bin Limits in Excel

Create a cell called “Bins”

Enter your Bins. Since we want bin to be width 5 there is only a difference of 5 between consecutive cells.

histograms summary data19
Histograms & Summary Data

Cell Range of Data Goes Here

  • Create Histogram

Bin range you created goes here

The cell where you want the frequencies to be displayed

histograms summary data20
Histograms & Summary Data
  • And the Results . . .

This is the number of uncounted player heights that were less than or equal to 70 inches

histograms summary
Histograms & Summary
  • Make a column called “Labels”
  • This will used to label your x-axis
histograms summary data22
Histograms & Summary Data
  • Plotting Our Results:
  • Click on Chart Wizard
histograms summary data23
Histograms & Summary Data
  • Select Chart Type

Click “Column”

histograms summary data24
Histograms & Summary Data
  • Plotting

Choose “Columns”

Cell Range of your Histograms Frequencies goes here

Click “Next”

histograms summary data25
Histograms & Summary Data
  • Plotting:

Click on “Series” tab from previous slide

Use #’s in “Labels” column

Click on “Next”

histograms summary data26
Histograms & Summary Data

Give an informative title that clearly describes the graph

Clearly label each axis. Don’t forget units!

Click “Finish”

histograms summary data28
Histograms & Summary Data
  • One last thing . . .
  • Left-click on one of the bars:
histograms summary data29
Histograms & Summary Data
  • Then Right-click on one of the selected bars
  • You’ll get this menu:

Click here

histograms summary data30
Histograms & Summary Data

Change this to zero

Click this tab

histograms summary data31
Histograms & Summary Data
  • And now the final results (really!)