33% of decrease.
150-100=50
50 is 1/3 of 150
1/3= 33%
Okay.. well did you try to do it on your own at least ? I help you, but what do you know already so we can go on from there.
Answer:
the x axis is 10, its interpretation is actually G, so on a graph instead of X and Y you would have G and T
Answer: see below
Step-by-step explanation:
(i)
200/2 = 100
Find 100 on cumulative frequency and the correspinding time: 14 minutes. So the answer is 14 minutes.
(ii)
First, find the lower quartile —> 200/4 = 50
Upper quartile —> 200/(3/4) = 150
Find the difference: 150 - 50 = 100
So the interquartile range is 100
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