Question

Based on data set shown which of the following is a true statement? -1, -1, 0, 1, 1, 1, 1, 2, 2, 2, 3. Mean = mode, mean less than median , mode less than median

Answer 1

"Mean = Mode"

Explanation:

Let's find the mean, median, and mode of the number set.

-1, -1, 0, 1, 1, 1, 1, 2, 2, 2, 3

Mean:

this is the average. We add up all of the numbers and divide by the number of numbers (11).

Mean =
`(-1+-1+0+1+1+1+1+2+2+2+3)/(11)\\=(11)/(11)\\=1`

the mean is 1

Median:

this is the "middle" number when arranged from least to greatest. From 11 numbers, the 6th number is the middle one. We can see from the arrangement below, that "1" is the middle number.

the median is 1

Mode:

this is the number that occurs the "most". Looking at the numbers, "1" occurs 4 times, which is the most. So

mode is 1

From the 3 choices, the first choice is right "mean = mode".