What are the minimum, first quartile, median, mean, third quartile, and maximum of the following data set?: 10, 4, 9, 13, 5, 11, 5, 3, 7, 5

1 Answer
Jul 28, 2018

Minimum: 3

First quartile: 5

Median: 6

Third quartile: 10

Maximum: 13

Explanation:

First, let's list the data out from smallest to largest:
3, 4, 5, 5, 5, 7, 9, 10, 11, 133,4,5,5,5,7,9,10,11,13

The minimum is the lowest number in the data set.
Since we listed it out from smallest to largest, we know that the minimum is 33.

The median is the middle number. Cancel out 44 numbers from each side and we are left with 22 numbers:
cancel(3), cancel(4), cancel(5), cancel(5), 5, 7, cancel(9), cancel(10), cancel(11), cancel(13)

Find the average of the middle 2 numbers 5 and 7 to find the median:
(5+7)/2 = 12/2 = 6
Therefore, the median is 6.

The first quartile (Q1) is the median of the lower half of data which lies at 25% of the data.
Let's look at the lower half of numbers:
3, 4, 5, 5, 5

Cancel out 2 numbers from each side and we are left with the Q1:
cancel(3), cancel(4), 5, cancel(5), cancel(5)
Therefore, the Q1 is 5.

The third quartile (Q3) is the median of the upper half of data which lies at 75% of the data.

Let's look at the upper half of numbers:
7, 9, 10, 11, 13

Again cancel out 2 numbers from each side:
cancel(7), cancel(9), 10, cancel(11), cancel(13)

The Q3 is 10.

The maximum is the highest number in the data set; it is 13.

Hope this helps!