The mean value of 100, 70, 70, and 20 is 65
Chat with our AI personalities
n= 25 scores from a population with mean =20
z = (80 - 100)/20 = -20/20 = -1 Look up a table of z-scores: Probability = 15.87%
The range of a set of numbers is the difference between the highest and lowest values. In this case, the highest value is 100 and the lowest value is 80. Therefore, the range of the numbers 80, 90, 90, 95, and 100 is 20.
Relative dispersion = coefficient of variation = (9000/45000)(100) = 20.
Th find the mean of a data set, you add up all the values in the data set and divide this sum by the number of data values. For example, the mean for the data set 2, 5, 6, and 7 is given as 2 plus 5 plus 6 plus 7, which is 20. You divide this sum by number of values in the data set, which is 4 to get 5 as the mean.