NumericalModerate3 marks
The mean of the following distribution is 50. Find the unknown frequency.
Topic: Mean / median / mode / quartiles
Previous-year question practice database
Answer
Exam answer
Unknown frequency = 16.
Explanation
Let the missing frequency be x. Use mean = Σfx/Σf = 50 and solve the resulting linear equation for x.
More from Measure of Central Tendency (Mean, Median, Quartiles and Mode)
Rakhi’s mobile number has the following integers :
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The mode of the above given data is :2026Find the mean of the following frequency distribution using step-deviation method.
Take assumed mean = 282026Assertion (A): The mean of first 9 natural numbers is 4.5.
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