The distribution of marks of 400 candidates in an A-level examination is presented in Table 2.12. (a)

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The distribution of marks of 400 candidates in an A-level examination is presented in Table 2.12.

(a) Calculate the mean value.

(b) Construct the cumulative frequency curve and estimate the median, fi rst, and third quartile values.

Marks 0-10 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81-90 91-100 Table 2.12 Frequency, f 6 15 31 80 93 69 54

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Question Posted: Nov 25, 2023 04:44 AM

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The distribution of marks of 400 candidates in an A-level examination is presented in Table 2.12. (a)

Question:

Marks 0-10 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81-90 91-100 Table 2.12 Frequency, f 6 15 31 80 93 69 54 33 12 7

Step by Step Answer:

a For the mean value we start with calculating the midpoint of each class interval This midpoint will be the representative value of the interval Mark...View the full answer

Business Statistics Using Excel

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