the frequency distribution of the mark awarded to 100 candidates is .pdf

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The document provides the frequency distribution of marks awarded to 100 candidates in ranges of 1-10, 11-20, 21-30, 31-40, 41-50. It asks to: 1) Construct a cumulative frequency table representing the distributions. 2) Estimate the lower and upper quartiles to determine the interquartile and semi-quartile ranges. 3) Calculate the probability that a randomly selected candidate's mark is less than or equal to 25.

Educação

the frequency distribution of the mark awarded to 100 candidates is as follows:- marks 1-10 13
candidates, 11-20 23 candidates, 21-30 36 candidates, 31-40 20 candidates, 41-50 8 candidates.
a. construct a cumulative frequency table to represent the information above. b. estimate the
lower and upper distribution. hence, determine 1. the interquartile range. 2. the semi-quartile
range and c. a candidate is elected at random. calulate the probility that its mark is <(less than) or
equal to 25.
Solution
a. upper limit comulative frequency 10 13 20 36 30 72 40 92 50 100 c. 54/100 =
probability

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