50 employees data of a certain office on the distances (in
km) between their residence & workplace
1.5, 2.2, 6.2, 7.1, 12.3, 13.6, 2.4, 6.5, 9.1, 5.0,
18.2, 7.1, 3.0, 15.2, 4.0, 17.2, 1.6, 14.2, 5.1, 15.2,
4.0, 16.5, 4.3, 5.7, 8.9, 6.0, 5.1, 18.9, 5.6, 2.3,
9.1, 11.5, 12.5, 1.7, 9.5, 2.0, 10.3, 11.8, 4.4, 10.5,
9.3, 18.0, 8.2, 8.9, 4.3, 14.1, 7.4, 3.7, 2.8, 6.7
Construct the frequency distribution from this
data
No. of Class Interval = 6
Answers
Answer:
Probability
Probability is a mathematical tool used to study randomness. It deals with the chance (the likelihood) of an event occurring. For example, if you toss a fair coin four times, the outcomes may not be two heads and two tails. However, if you toss the same coin
4
,
000
times, the outcomes will be close to half heads and half tails. The expected theoretical probability of heads in any one toss is
12
or
0.5
. Even though the outcomes of a few repetitions are uncertain, there is a regular pattern of outcomes when there are many repetitions. After reading about the English statistician Karl Pearson who tossed a coin
24
,
000
times with a result of
12
,
012
heads, one of the authors tossed a coin
2
,
000
times. The results were
996
heads. The fraction
996
2
,
000
is equal to
0.498
which is very close to
0.5
, the expected probability.
Answer:
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