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India
Class VIII

Using Frequency tables and graphs to estimate probabilities

Interactive practice questions

The following table shows the frequency of the lengths jumped at a long jump competition. The class interval is a range of distances measured in centimeters.

Class Interval Frequency
$0-39$039 $6$6
$40-79$4079 $9$9
$80-119$80119 $7$7
$120-159$120159 $8$8
$160-199$160199 $1$1
$200-239$200239 $2$2
Sum $33$33
a

According to the table, what is the probability that someone jumped more than 119 cm?

b

What is the probability that someone's jump measured between 80 and 159cm (inclusive)?

Easy
1min

At a golf course, the number of golf balls lost each day over several days were recorded, and rounded to the nearest 10. The graph shows the results.

Easy
1min

The following table shows the number of people who scored a certain mark on a recent test. The test is marked out of 50.

Easy
2min

The following table shows the weekly wage of a number of workers that were surveyed.

Medium
1min
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Outcomes

8.DH.DH.3

Consolidating and generalising the notion of chance in events like tossing coins, dice etc. Visual representation of frequency outcomes of repeated throws of the same kind of coins or dice. Throwing a large number of identical dice/coins together and aggregating the result of the throws to get large number of individual events. Observing the aggregating numbers over a large number of repeated events.

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