Question If the average of 5 positive integers is 40 and the difference between the largest and the smallest of these 5 numbers is 10, what is the maximum value possible for the largest of these 5 integers? A. 50B. 52C. 49D. 48E. 44 Correct Answer : Choice D. 48 ExplanationThe average of 5 positive integers is 40. i.e., the sum of these integers = 5*40 = 200 Let … [Read more...] about GMAT Descriptive Statistics : Averages
GMAT Descriptive Statistics
Mean, Median – GMAT Descriptive Statistics
HiQuestions testing you understanding of the link betwen Mean and Median are frequently tested in the GMAT.Here is a basic but interesting question on the combo.QuestionPositive integers from 1 to 45, inclusive are placed in 5 groups of 9 each. What is the highest possible average of the medians of these 5 groups?A. 25B. 31C. 15D. 26E. 23 Correct AnswerChoice B. 31 is the … [Read more...] about Mean, Median – GMAT Descriptive Statistics
Descriptive Statistics – Mean and Median; Divisibility
How many numbers of 7 consecutive positive integers are divisible by 6?1) Their average is divisible by 62) Their median is divisible by 12 … [Read more...] about Descriptive Statistics – Mean and Median; Divisibility
Descriptive statistics – Standard Deviation
If m is the arithmetic mean (average) of 4 integers a, b, c, and d and s is the standard deviation of the 4 integers and s = , then is s > 0?(1) m > a(2) a + b + c + d = 0Solution:s will be zero only in two instances: (i) when all the elements in the set are the same, or (ii) the set contains only one element, which in this case is not possible. So, we need to check whether a, … [Read more...] about Descriptive statistics – Standard Deviation
Descriptive Statistics, Prime Numbers, Progression
This GMAT practice question tests your understanding of 3 topics. The core topic tested is Descriptive Statistics. Basic understanding of Prime Numbers and Progressions is needed to solve this question. Question The ages of three friends are prime numbers. The sum of the ages is less than 51. If the ages are in Arithmetic Progression (AP) and if at least one of the ages is … [Read more...] about Descriptive Statistics, Prime Numbers, Progression