1. Data Distribution - Histograms

2. Data Distribution - Histograms
Histogram – a graph used to show data distribution in which the horizontal axis displays groups of data called bins and the vertical axis shows the frequency of the data in each bin

4. Data Distribution - Histograms
Create a histogram for the following data representing the sales made by a salesperson per day for a month.

5. Data Distribution - Histograms
Step 1 – The data will be broken into groups called bins so choose a bin size and the bins to use.
For example a bin of 0 – 3 would represent the days where 0 – 3 sales were made.
The smaller the bin size the more specific you can be about where the data is, but the more bins will result.
0 - 3
3 – 6
6 – 9
9 – 12
12 – 15

6. Data Distribution - Histograms
Step 2 – Create a frequency table, using your bins, and determine how many values are in each bin.
frequency
0 – 3 This is for all values from 0 up to but not including 3
3 - 6 This is for all values from 3 up to but not including 6
6 -9
9 -12
12- 15

7. Data Distribution - Histograms
Step 2 – Create a frequency table, using your bins, and enter the data.
frequency
0 – 3 This is for all values from 0 up to but not including
3 - 6 This is for all values from 3 up to but not including
Step 3 – Draw the histogram

8. Frequency
Bins

9. Step 4 – Sometimes the mean and median are identified on the histogram with vertical lines.

10. median mean
Frequency
Bins