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 one of the objective questions from the 2019 Waec Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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