© 2007 m. tallman. find the mean of 7, 4, 5, 3. 7 4 6 3 20 5 5 5 5 step 1: add the numbers in the...
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© 2007 M. Tallman
© 2007 M. Tallman
Find the mean of 7, 4, 5, 3.
7463
20
5555
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
There are 4 numbers
(7, 4, 6, & 3).
Divide by 4.
mean = 5
Step 3: Count how many numbers there are in the data set.
© 2007 M. Tallman
Find the mean of 9, 4, 5.
945
18
666
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
There are 3 numbers (9, 4, & 5).
Divide by 3.
mean = 6
Step 3: Count how many numbers there are in the data set.
© 2007 M. Tallman
Find the mean of 8, 3, 6, 7.
8367
24
6
6
6
6
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
Divide by 4.
mean = 6
Step 3: Count how many numbers there are in the data set.
There are 4 numbers (8, 3, 6, & 7).
© 2007 M. Tallman
Find the mean of 5, 3, 6, 4, 25
364
20
4
4
4
4
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
Divide by 5.
mean = 4
Step 3: Count how many numbers there are in the data set.
There are 5 numbers (8, 3, 6, 4, &
2).
2
4
© 2007 M. Tallman
27
272715
Find the mean of 15, 10, 2
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
Step 3: Count how many numbers there are in the data set.
+10+2=1 2 3
)39
mean = 9
© 2007 M. Tallman
30
3010 305
Find the mean of 10, 10, 3, 2, 5
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
Step 3: Count how many numbers there are in the data set.
+10 +3 =1 2 3
)56
mean = 6
+ +24 5
© 2007 M. Tallman
25
25
255 9
Find the mean of 5, 5, 3, 3, 9
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
Step 3: Count how many numbers there are in the data set.
+5 +3 =1 2 3
)55
mean = 5
+ +34 5
© 2007 M. Tallman
32
323210 2
Find the mean of 10, 11, 9, 2
Step 1: Add the numbers in the data set.
Step 2: Divide the sum by the “number of numbers” in the data set.
Step 3: Count how many numbers there are in the data set.
+11 =1 2
)48
mean = 8
+ +93 4