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Histogram

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by

Arkam Contractor

on 12 May 2015

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Transcript of Histogram

Histogram
A histogram is a graphical display of data using bars of different heights. A histogram is similar to a bar graph but it groups the data into ranges and frequencies.

The bars in a histogram, shouldn't have spaces in between them
Tools to make a histogram
1) Data- This is what your histogram is based off of.

2) Triple T-Chart- This helps you organize your data into ranges and helps to find the frequency.
How to make a histogram step by step
Range
Tally
Frequency
2-7
8-13
14-19

Data

3,4,5,6,9,2,7,2,12,14,14,16,18,17,15
Step 1. Arrange the data into a triple t-chart
This is how the triple T-chart should look like:
Step 2. Make the scale. The Range goes on the X axis and the frequency goes on the Y axis.
A) Students must know how to calculate range and frequency with the given data using appropriate strategies.B) Students must know how to label the X axis in relation to the given data.
Learning Goals
Step 3. Make your bars according to the range and
frequency. Make sure there are no spaces in between the bars.
Question for the class:
These are the number of apples that fell off an apple tree each day over the course of 20 days:
5,12,12,16,17,7,21,15,17,19,17,4,6,2,3,14,14,13,28,25
X and Y axes.
7
2
6
|||| ||

||

|||| |
Check
Sum of the frequency, should
equal, the number of total data.
7+2+6=15
Data

3,4,5,6,9,2,7,2,12,14,14,16,18,17,15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
X
Y
(Interval)
X
Y
EXIT CARD
Jack recorded the weight of his German Shepherd each month over the course of a year.

These are his recordings:
66, 68, 73, 70, 72, 75, 73, 78, 80, 82, 81, 79
A) Create a triple t chart and use that to make