1
they are prob. not valid and the test is not mesured depression
To find the median of Wednesday's test scores, first arrange the scores in numerical order from least to greatest, then select the middle value as the median. If there is an even number of scores, the median is the average of the two middle values.
3
yes it is a good way to describe test scores answer
the test scored appear to be reliable
They are the same.
3 perfect scores.
The mode, which is equivalent to the average for a set of data, is 78.4. To arrive at this answer, add all of the numbers in the data set together and divide it by ten, because there are ten test scores.
The mode is the number that appears the most often. In this case it is 57.
recess does improve test scores.
2, 2, 5, 7, 9, 11. Mean = Median = 6 Mode = 2
To get better scores on the Test you must better know the material on the test prior to taking it.