Waec Model Questions Vol1 2019 Mathematics Question 20
Practice objective / multiple choice question 20 from the 2019 Waec Model Questions Vol1 Mathematics examination.
A data set of 8 numbers has a mean of 14 and a standard deviation of 3. After adding one more number, the new data set of 9 numbers has a mean of 15 and a standard deviation of 4. What is the value of the added number?
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About This Question
This is Waec Model Questions Vol1 2019 Mathematics Question 20. It is a objective / multiple choice question from the 2019 Waec Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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