Chapter 1.1, Problem 12E

(b)

To determine

To draw:a frequency bar diagram with the data given below and describe.

Type	Count
Passenger elevator	66602
Freight elevator	41410
Escalator	2663
Dumbwaiter	1143
Sidewalk elevator	943
Private elevator	252
Handicap lift	227
Man lift	73
Public elevator	45

Answer to Problem 12E

  

As the bar chart conveys, passenger elevators form major chunk (that is 89% of total elevators) meaning that passenger elevators are used maximum times and then comes freight elevators. The elevators least in number are man lift and public elevators which form .10% or less of total count.

Explanation of Solution

The two data columns in the above table are selected and a column or bar chart is drawn using logarithmic scale as there is a wide variation in counts of elevators.

Corresponding bar chart and scale setting for Y axis is enclosed.

  

  

As the bar chart conveys, passenger elevators form major chunk (thatis 89% of total elevators) meaning that passenger elevators are used maximum times and then comes freight elevators. The elevators least in number are man lift and public elevators which form .10% or less of total count.