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The table below shows marks scored by 40 candidates in an examination.

The table below shows marks scored by 40 candidates in an examination.

a) Using an assumed mean of 45.5 estimate :
i) Mean
ii) Standard deviation
b) Calculate the quartile deviation.

Answers

sharon kalunda answered the question on May 9, 2019 at 08:37

Answer Attachments

Next: The sketch below shows curve y = 2x² + 4x + 3 and a straight line intersecting the curve at points A and B.

Previous: a) Complete the table below for the values of sin 2x and 2 cos (x - 30^o)

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