This question is driving me nuts! I need a calculator and a cup of coffee to figure this out. Maybe I should just guess and hope for the best. C'mon, lady luck!
Wait, wait, wait. I'm pretty sure the mean absolute deviation is supposed to be a whole number. D) 101 looks a bit too high, don't you think? I'm going with B) 3.
Okay, I think I've got this. The mean is 50, and the deviations are 10, 30, 50, and 70. The average of those deviations is 40, so the answer must be C) 5.
I'm not sure, but I think the mean absolute deviation is calculated by finding the average of the absolute differences between each data point and the mean, so B) 3 makes sense.
Hmm, let me think about this. The mean absolute deviation is a measure of the average distance of each data point from the mean. Looks like I'll need to calculate the mean first and then the deviations from that.
Georgeanna
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