Question

The safety manager at Klutz Enterprises provides the following graph to the plant manager and claims that the rate of workers injuries has been reduced by 67% over 12-year period. Does the graph support this claim? explain.

Answer 1

The graph is attached above

Answer 2

I really need to know how to do this

Answer 3

we were learning previously about misleading graphs and data, this might help

Answer 4

Look at the graph. Just do a visual estimate. What about this graph is misleading?

Answer 5

It LOOKS like 67% because of the relative height of the bars (2004 is about 1/3 the height of 1992). But look closely at the graph - what is the problem with it?

Answer 6

the length of the bar in 1992 seems to be three times higher than the bar in 2004

Answer 7

Right...... buuuut.....? Do you see it? Look closely. ;)

Answer 8

its not proportional

Answer 9

Hmm.. it's not that, really. The scale is the same for both. But look at the y-axis.

Answer 10

Its missing a zero

Answer 11

and this messes up the length of the bars

Answer 12

Right! And more importantly - it "starts" at 0.170. So the reduction is much less than 67%. looks like the actual proportion goes from (roughly) 0.202 down to 0.180.

Answer 13

Right - the height of the bars alone doesn't tell the story, due to the fact that the y-axis does not start at 0.

Answer 14

What do you mean by the reduction is much less than 67%

Answer 15

looks like the actual proportion goes from (roughly) 0.202 down to 0.180. So that is a reduction of 0.022.

0.022/0.180 = 0.122

so about 12%

Answer 16

Love ya, thanks for the help

Answer 17

Oops, I should have said:

0.022/0.202 = 0.109, so about 11%. Reduction should be measured from the initial level.

You're welcome, glad to help. :)

Answer 18

Aum?

Answer 19

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