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GMAT Questions: Statistics

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Videos, examples and solutions that will help GMAT students review questions on statistics.

GMAT Math - Statistics
This video covers the statistics problems in the GMAT Math section.
Example: A class of 31 students has recently taken an exam and the average mark was 81. 10 students received a mark of 75, while 8 received a mark of 76. If the remaining students received marks of either 85 or 91, how many students received a score of 85?
Arithmetic Mean / Averages Heavy Truck Question
The arithmetic mean of the mass of 10 vehicles is 12 tons. The mean weight of the group of vehicles increased by 2.4 tons after a new heavy-duty truck was added to the group.
Approximatelywhat was the mass of the heavy-duty truck?

Data Sufficiency - Median of a b and c
Is c the median of a, b and c?
(1) b - c = a
(2) c = a
Standard Deviation Example - GMAT Statistics

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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