Coal Consumption The following data represent the energy con

Coal Consumption: The following data represent the energy consumption of coal (in billions of Btu) by each of the 50 states and the District of Columbia. Use the data to construct a frequency distribution and a relative frequency distribution with classes. 631 723 267 60 372 15 19 92 306 38 413 8 736 156 478 264 1015 329 679 1498 52 1365 142 423 365 350 445 776 1267 0 26 356 173 373 335 34 937 250 33 84 0 253 84 1224 743 582 2 33 426 474

Solution

Sol)

Highest=1498

Smallest=0

Range =(1498-0) =1498

Number of classes=10 assume

Class interval =(Range) / number of classes

=1498 / 10 =149.8 =150 (App)

USING EXCEL

Relative freq = (freq of individual) /Total freq