first off, that is one creeeeepy topic to study.
mean is all the numbers added together and then divided by the number of elements, so in the case of 5,2,3,1,8, i add like 5+2+3+1+8 and divide this number (19) by 5, the number of elements used, and the mean is 3.8. how your book got .17 is that there 3944 people who knew 0 people affected by homicide,so there are 3944 "0"s in the set, 279 "1"s, and so on, but instead of adding 3944+279... you must remember they mean 3944 "0"s and that 3944 is not a part of the data. so it looks like this:
(3944 x 0) + (279 x 1) + (2 x 97) +
(3 x 40) + (4 x 30), and the sum is divided by (3944 + 279 + 97 + 40 + 30), and it comes out at around .17
Number of People You Have Known
Who Were Victims of Homicide
# of Victims Frequency
0 3944
1 279
2 97
3 40
4 30
a. To find the mean, it is necessary to give a score to the “4 or more” category. Find it, using the score 4.5. (In practice, you might try a few different scores, such as 4, 4.5, 5, 6, to make sure the resulting mean is not highly sensitive to that choice.)
Need help the book says the answer is .17
I don't know how that got that.
Please help
2 answers
THank u I was lost.
1 answer