Question

Gasoline prices

1980 1.131 1.207 1.252 1.264 1.266 1.269 1.271 1.267 1.257 1.250 1.250 1.258

mean,

median,

mode,

midrange

standard deviation

Answer 1

Solution:- Given that Gasoline prices 1980

1.131 1.207 1.252 1.264 1.266 1.269 1.271 1.267 1.257 1.250 1.250 1.258

mean = sum of terms /number of terms

= (1.131 + 1.207 + 1.252 + 1.264 + 1.266 + 1.269 + 1.271 + 1.267 + 1.257 + 1.250 + 1.250 + 1.258)/12

= 1.245

median = The median is the middle number in a sorted list of numbers. So, to find the median, we need to place the numbers in value order and find the middle number.

= (1.257+1.258)/2

= 1.2575

= 1.258

Mode = The mode of a set of data is the value in the set that occurs most often.

= 1.250

midrange = (1.131 + 1.271)/2 = 1.201

Standard deviation:-