find the midrange of these:

1.5, 2.5, 3.0, 1.0, 1.4, 3.5, 1.8, 1.8, 3.3, 2.2, 2.8, 1.8

I thought you take the highest - the lowest and then divide by 2, but the answer I get is not one of the choices.

Show me the formuula please? Thanks!

"midrange: a rough estimate of the center found by taking the mean of the highest and lowest value in the data set. Symbol: MR"

http://personal.jccmi.edu/TuckeyAlanaJ/portfolio/APRP/133_win02_ch3notes.htm

Thanks! I took it to mean I add, I was minusing! It made a world of difference

To find the midrange of a set of numbers, you need to do the following steps:

1. Arrange the numbers in ascending order from lowest to highest:
1.0, 1.4, 1.5, 1.8, 1.8, 1.8, 2.2, 2.5, 2.8, 3.0, 3.3, 3.5.

2. Find the highest and lowest numbers in the set:
The lowest number is 1.0 and the highest number is 3.5.

3. Add the highest and lowest numbers together:
1.0 + 3.5 = 4.5.

4. Divide the sum by 2 to find the midrange:
4.5 ÷ 2 = 2.25.

Therefore, the midrange of the given set of numbers is 2.25.