4.
The file contains the data in the next column ab
out the cost of electricity during July 2010 for a
random sample of 50 one
-
bedroom apartments in a large city
.
a
.
Construct a frequency distribution and a percentage
distribution that have class intervals with
the upper class boundaries $99, $119, and so on
.
b
.
Construct a cumulative percentage distribution
.
c. Around what amount does the monthly electricity cost seem to be concentrated