To find the mean, we add up all the numbers and divide by the total number of numbers:
(15 + 13 + 9 + 9 + 7 + 1 + 11 + 10 + 13 + 1 + 13) / 11 = 92 / 11 ≈ 8.4
The mean is approximately 8.4.
To find the median, we first need to put the numbers in order from least to greatest:
1, 1, 7, 9, 9, 10, 11, 13, 13, 13, 15
There are 11 numbers, so the median is the middle number. In this case, there are two middle numbers (9 and 10), so we find the average of those two:
(9 + 10) / 2 = 9.5
The median is 9.5.
To find the mode, we look for the number that appears most frequently. In this case, both 13 and 1 appear three times each, so there are two modes: 13 and 1.
Find the mean , median , and mode of the data set . Round to the nearest tenth . 15, 13 , 9 , 9 , 7 , 1 , 11 , 10 , 13 , 1, 13
1 answer