Universal package service,ltd., delivers sm parcels to business addresses in the greater boston area. to learn more about data description on the # of deliveries/wk for a sample of 10 customers: 3 3 4 2 3 3 23 3 Calcuate the range, variance & standard deviation for this data series. which measure does the best job of describing the dispersion in this variable? Please show how answers were obtained-the arithmetic portion. thank you.
Please refer to the attachment.
1 The range is the simplest measure of spread or dispersion: It is equal to the difference between the largest and the smallest values.
Here, range = 4- 2 =2
The range can be a useful measure of spread because it is so easily understood. However, it is very sensitive to extreme scores since it is based on only two values. The range should almost never be used as the only measure of spread, but can be informative if used as a supplement to other measures of spread such as the ...
The expert determines the range, variance & standard deviation for this data series. Which measure does the best job of describing the dispersion in this variable is provided.