Hello to all

What percent of students scored higher than you?

Mean is 66.63333333
Standard Deviation is 16.06648103
Z-score is 0.7721334071

This is what I came up with ...Just need someone to make sure that I'm doing the right thing, thanks.

Sicne my z-score is 0.7721334071, I looked for it on table A2 and it's .7794. So, I'm assuming the percent of students who scored higher that me is 77% or 75%. Thanks again:)

Hello to all

What percent of students scored higher than you?

Mean is 66.63333333
Standard Deviation is 16.06648103
Z-score is 0.7721334071

This is what I came up with ...Just need someone to make sure that I'm doing the right thing, thanks.



Sorry to say, but without any idea of the raw data, can't say if the mean/standard deviation/z-score is right or wrong. For the z-score, you need your score, and if that standard deviation is only a sample (rather than true) standard deviation, also need n=sample size.

Sicne my z-score is 0.7721334071, I looked for it on table A2 and it's .7794. So, I'm assuming the percent of students who scored higher that me is 77% or 75%. Thanks again:)

If your z-score is +0.772, that means you scored above the mean. So it's nonsense that 77.94% scored higher than you; remember, you have to subtract 1-.7794, because .7794 is the proportion that score below
you.