

Median Review
Presentation
•
Mathematics
•
6th - 9th Grade
•
Easy
Standards-aligned
Sean Richards
Used 87+ times
FREE Resource
10 Slides • 8 Questions
1
Median Review
Finding Median is a key concept to Box and Whisker plots.

2
Median Basics
Median is the middle value if a set of numbers
The MUST be listed from least to greatest
3
Median Example
9 is the median in this set of numbers.
it is the MIDDLE VALUE
4
Multiple Choice
Lets start off with an easy one:
What is the median of this set of data?
15, 16, 17
15
16
17
5
Multiple Choice
Try another one with a few more numbers:
find the median:
10, 16, 21, 23, 25
10
16
21
23
6
When finding median
Make sure there are the same number of values on each side of median
in this example, 3 values to the left
3 values to the right...
7
Multiple Choice
Try another one
Find the Median:
10, 14, 15, 17, 19, 20, 23
10
14
15
17
8
Multiple Choice
Now one a bit harder:
Find the median
23, 25, 25, 26, 28, 29, 30, 32, 34, 36, 37
26
28
29
30
9
Median Level 2
The given values MUST be in order from least to greatest
If they are not given in that order
You NEED TO REORDER the valuse to get the correct mean
10
Multiple Choice
Try an Easy one:
Find the Median
45, 36, 52
45
36
52
11
You need to order values from least to greatest
36, 45, 52 making 45 the median
12
Multiple Choice
Try another one: Make sure to order the values from least to greatest
Find the Median
8, 2, 1, 5, 7
1
5
7
13
Median Level 3
If there are an even number of values in the set
you will have two numbers in the middle
You must find the average of those two numbers
14
Multiple Choice
Try and easy one:
find the median
11, 12, 14, 15
12
13
14
15
11, 12, 14, 15
12 and 14 are in the middle
find the mean of 12 and 14
12+14 divided by 2
the result, 13, is the median
16
Multiple Choice
Try another one:
Find the median
36, 41, 46, 58
41
46
43.5
40.5
17
36, 41, 46, 58
41 and 46 are in the middle
find the average of those two numbers
41+46 = 87
87 divided by 2 = 43.5
the median is 43.5
18
Closing: To find median you need 3 things
the values ordered from least to greatest
find the middle value
If there are two numbers in the middle, find the mean of those two numbers.
Median Review
Finding Median is a key concept to Box and Whisker plots.

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