Monday, September 25, 2006

Leslie's Homework "Bill's History Marks"

Bill's history marks are: 72, 66, 65, 73, 71, 69, 68, 72.
Find the mean, mode, median and range.

65,66,68,69,71,72,72,73
Mean-69.5 Mode-72
Median-70 Range-8


A) If he scores 91 on the next test, which measure of central tendency will be most affected? Explain.

65,66,68,69,71,72,72,73,91
Mean-96.2222222222222Mode-72
Median-71 Range-26
The central tendency most affected was the range because eight to twenty is more of a difference then seventy and seventy-one. So range changed the most.

B) If he scores 66 on the next test, Which measure of central tendency will be most affected? Explain.

65,66,66,68,69,71,72,72,73
Mean-69.1111111111111 Mode-66 and 72
Median-69 Range-8
The central tendency most affected was mode because there is another mode now.

Leslie 8-41

2 comments:

*(l)*(e)*(s)*(l)*(i)*(e)* said...

On questions a and b the mean is long and im not sure if thats the right answer but thats what it said on my calculator and i checked it a bunch of times so thats my answer.

Mr. H said...

Good work I think part A the mean is incorrect. check it out It should be closer to 70%.

Good Work

Harbeck