# Algebra IA Notes_ Frequency Histograms

Document Sample

```					           Algebra IA Notes: Frequency Histograms
1. Frequency Tables

   Frequency tables are used to organize large data sets into manageable groups

   Steps to create a frequency table:

1) Choose appropriate __________________

2) Fill in Frequency = number of pieces of data in each interval

Example: Make a frequency table for the following data:

7, 18, 3, 24, 16, 1, 2, 13, 8, 15, 22, 11, 13, 19, 12, 9, 16, 14, 11, 22, 25, 12, 14, 7, 1, 18,
13, 23, 11, 14, 17, 5, 16, 13, 14, 6, 12, 19, 11, 3

Interval       Tally             Frequency                       16.00
14.00
12.00

Frequency
10.00
8.00
6.00
4.00
2.00
0.00
1   2      3       4    5
Interval

2. Frequency Histograms (example above)

   A frequency histogram is a ________ graph that graphs interval versus frequency

   Label the ________________ on the x-axis, and ______________ on the y-axis

   Draw bars for each interval that are the height of the frequency

3. Stem and Leaf Plots
 Use the first digital of each number as the stem, and the second as the leaf

Example: Make a stem and leaf plot for: 13, 14, 14, 16, 20, 22, 28, 29, 30, 37, 41, 63

Stem        Leaf

```
DOCUMENT INFO
Shared By:
Categories:
Stats:
 views: 6 posted: 2/2/2010 language: English pages: 1
How are you planning on using Docstoc?