58.
The median is the middle value in the list of numbers.
Therefore, the median is 9.
The mean is the average value where all the numbers are added up divided by the number of numbers.
Therefore, (12+16+10+9+20+11+20) / 7 = 14
The range is the difference between the largest and smallest values.
Therefore, 20 - 9 = 11
The interquartile range is the difference between the first quartile and third quartile of the list of numbers.
The first quartile is 16 because in the list, between 12 and 10 is 16.
The third quartile is 11 because in the list, between 20 and 20 is 11.
Therefore, the interquartile range is 16 - 11 = 5.
59.
The following steps on how to get the mean absolute deviation.
Step 1: Find the mean of the data.
(80+90+70+80+90) / 5 = 82
Step 2: Subtract the mean from each data point. If the value is negative, change it to positive.
80 - 82 = -2
90 - 82 = 8
70 - 82 = -12
80 - 82 = -2
90 - 82 = 8
All positive values will be 2, 8, 12, 2 and 8.
Therefore the mean absolute deviation is
(2+8+12+2+8) / 5 = 6.4
Hope this helps ☺️ ✌️
