1. The mean is useful when you need the average value of data, such as an average grade.
The median, however, gives you the middle point of the data - which is useful if you have an outlier or a skew. In the grades analogy, you might have a low average due to a 0, but median would still give an accurate representation of your percentage understanding of the subject.
The mode gives you the value that occurs most - use that if you need to determine what occurs most frequently.
2. If the median and mean are substantially different, the data is significantly skewed to the left or right.
3. The range and standard deviation provide information on the variance of data. A high range or standard deviation means the data has a high spread.
I'm reviewing for my final exam can anyone give me some tips on this I know what this means but I just to know someone eles opinion. Thanks
Under what conditions might it be appropriate to use the mean? Median? Mode?
When the median and mean are substantially different, what does that tell you about the data?
What information does the range and standard deviation provide about the data?
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Thank you Marth I understand that the mean you add all the numbers then divide by the how many #'s were added right. I understand all three of them but once again is the mode the one that is repeated more than once right.
Yes, the mode is the value that is repeated the most.
6 answers