Question

Find the lower quartile (Q1) median and upper quartile (Q3)of the data below

1. 4,1,3,2,7,9

2. 34,66,26,31,38,78,42,74

3. 52,49,45,36,87,64,81,93,53

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Answer 1

Below in bold.

Explanation:

Arrange the data in ascending order:

1. 1 1 2 3 4 7 9

Median = middle number = 3.

Q1 = 1

Q3 = 7.

2. 26 31 34 38 42 66 74 78

Median = mean of 2 middle numbers = 40.

Q1 = 31.

Q3 = 74.

3. 36 45 49 52 53 64 81 87 93

Median = middle number = 53.

Q1 = 47.

Q3 = 84.