1. DATA PROBABILITY AND
STATISTICS-GRADE 4
OBJECTIVE: USE MEAN, MEDIAN, AND
MODE TO DESCRIBE A SET OF DATA.
Created by: SHERRI COLLIE
EDN 300-002
JULY 14, 2009
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PICTURES BY: GOOGLE AND POWERPOINT
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CREATED BY: SHERRI COLLIE
A MATH LESSON PLAN FOR FOURTH GRADERS
5. For more
math tips
CONTENT 1.2 press here!
The Mean, Median, and Mode are
summary statistics that help you
describe a set of numbers in a
data set.
6. CONTENT 1.3
MEAN EXAMPLE
Data Set:
It is the average 7, 6,4,6,10,8,5,2
The sum of all numbers
= the sum of all the = 48
numbers in a set Divide the sum by the
divided by the total total of the numbers in
number in that data set the data set.
48/8=6
The mean is 6
7. CONTENT 1.4
MEDIAN:
Data set
• the value in the middle
of the data set. 15, 24,49,8,50
Put them in order from lowest
• half the numbers are to highest
< or = to the median. 8,15,24,49,50
• half the numbers are Pick the middle value
> or = to the median Median=24
8. CONTENT 1.5
Data Set:
3,4,5,5,6,7,8,10
If your data set has an
even amount of
numbers,
Your data set would
have two middle
values.
Take the mean of
these two values to
get the median.
Median=(5+6)=11
11/2=5.5
Median=5.5
9. CONTENT 1.6
The Mode is the value which
has the greatest frequency in the
data set.
Example Data Set:
3,4,5,5,6,7,8,10
The Mode of this Data Set is:
5
10. CONTENT 1.7
If there are no repeating
numbers in the data set,
Example:
Data Set: 3,5,7,9,12,15
There is no mode.