Question

Fast please! Which measure of center is best to use for this set of data?

45, 39, 49, 37, 3, 51

Question 1 options:

Mean


Median


Mode


Range

Answer 1

Mean:

`mean = ((45 + 39 + 49 + 37 + 3 + 51))/(6) \\ = 37.3`

Median:

`3 \: \: 37 \: \: 39 \: \: 45 \: \: 49 \: \: 51 \\ median = ( (n)/(2) + 1) {}^(th) \\ = ( (6)/(2) + 1) {}^(th) \\ = 4 {}^(th) \: value \\ median = 45`

Mode:

Range:

`range = 51 - 3 \\ = 48`

Answer 2

Median

Explanation:

Mean: Add up all the numbers, then divide by how many numbers there are.

Median: Arrange your numbers in numerical order. Count how many numbers you have. Go to the number in that position and average it with the number in the next higher position to get the median.

Mode: Put the numbers in order from least to greatest and count how many times each number occurs.

Range: The difference between the smallest and highest numbers