Calculate the mean of the data represented by the following stem and leaf plots.
The values in this stem and leaf plot are (3, 8, 22, 32, 58, 98, 98).
Mean
Mean 
= 
Sum of all values Number of values 
= 
3 + 8 + 22 + 32 + 58 + 98 + 98 7 
= 
319 7 
= 
45.6 
Median
Median is the middle term when all the values are arranged in numerical order.
The values, in order, are (3, 8, 22, 32, 58, 98, 98).
32 is in the middle.
Range
Range 
= 
Max value of the data  Min value of the data 

= 
98  3 

= 
95 
Lower Quartile
The lower quartile is the median of the first or lower half of the data values.
The lower half of the data values is (3, 8, 22).
The median of (3, 8, 22) is 8.
Upper Quartile
The upper quartile is the median of the second or upper half of the data values.
The upper half of the data values is (58, 98, 98).
The median of (58, 98, 98) is 98.
The answer is
Mean:
Median:
Range:
Lower Quartile:
Upper Quartile: