Q1, Q3, IQR
Presentation
•
Mathematics
•
6th Grade
•
Medium
Standards-aligned
Krystle Matuseski
Used 216+ times
FREE Resource
4 Slides • 10 Questions
1
Q1, Q3, IQR
2
Steps to Find Q1, Q3, IQR
Step 1 - Order the data from least to greatest
Step 2 - Find the median of the data set
Step 3 - To find the Q1, look at all the numbers to the left of the median value. Find the number in the middle.
Step 4 - To find the Q3, look at all the numbers to the right of the median value. Find the number in the middle
Step 5 - To find the IQR, subtract Q3 - Q1
3
Basic Questions
4
Multiple Choice
First step for finding the median is to order the numbers from least to greatest?
True
False
5
Multiple Choice
IQR = Q3 - Q1
True
False
6
Multiple Choice
Q1 is the median (middle) of the lower half of the data values.
True
False
7
Multiple Choice
Q2 is the same as the ______
Mean
Median
Mode
Range
8
Multiple Choice
Quartiles break the data set into _____ equal parts each representing 25% of the data.
1
2
3
4
9
Practice Problems
Make sure you write your data in order from least to greatest before solving!
10
Multiple Choice
Find the median, first quartile, third quartile, and interquartile range of the data.
23, 33, 25, 16, 27, 43, 29, 40, 35
Median: 29
First Quartile: 24
Third Quartile: 37.5
IQR: 13.5
Median: 27
First Quartile: 25
Third Quartile: 35
IQR: 10
Median: 29
First Quartile: 25
Third Quartile: 37.5
IQR: 12.5
Median: 27
First Quartile: 24
Third Quartile: 35
IQR: 11
11
Multiple Choice
Find the median, first quartile, third quartile, and interquartile range of the data.
203, 183, 212, 181, 157, 204, 189, 190
Median: 189
First Quartile: 182
Third Quartile: 203
IQR: 21
Median: 189.5
First Quartile: 182
Third Quartile: 203
IQR: 21
Median: 189
First Quartile: 182
Third Quartile: 203.5
IQR: 21.5
Median: 189.5
First Quartile: 182
Third Quartile: 203.5
IQR: 21.5
12
Multiple Choice
Find the median, first quartile, third quartile, and interquartile range of the data.
32, 53, 72, 66, 47, 54, 49, 67, 71
Median: 54
First Quartile: 49
Third Quartile: 67
IQR: 18
Median: 54
First Quartile: 48
Third Quartile: 69
IQR: 21
Median: 54
First Quartile: 48
Third Quartile: 69
IQR: 22
Median: 54
First Quartile: 49
Third Quartile: 69
IQR: 20
13
Multiple Choice
What is the IQR of the following Data Set:
1, 3, 4, 5, 5, 7, 9
Q1: 3
Q2: 4
Q3: 6
IQR: 6 - 3 = 3
Q1:3.5
Q2: 5
Q3: 8
IQR: 8 - 3.5 = 4.5
Q1: 3
Q2: 5
Q3: 7
IQR: 7 - 3 = 4
14
Multiple Choice
What is the Q1, Q2, and Q3 of the following data set?
4, 5, 6, 8, 9, 10, 11
Q1: 4
Q2: 8
Q3: 11
Q1: 5
Q2: 8
Q3: 10
Q1: 4
Q2: 5
Q3: 6
Q1, Q3, IQR
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