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Important Formula: Averages | Additional Study Material for CAT PDF Download


  • Simple Average = Important Formula: Averages | Additional Study Material for CAT
  • Weighted Average = Important Formula: Averages | Additional Study Material for CAT
  • Arithmetic Mean = (a1 + a2 + a3 ….an) / n
  • Geometric Mean =Important Formula: Averages | Additional Study Material for CAT
  • Harmonic Mean = Important Formula: Averages | Additional Study Material for CAT

For two numbers a and b

⇒ AM = (a + b)/2

Important Formula: Averages | Additional Study Material for CAT

EduRev's Tip: 

  • AM ≥ GM ≥ HM is always true. They will be equal if all elements are equal to each other. If I have just two values then GM2 = AM x HM
  • The sum of deviation (D) of each element with respect to the average is 0 

    ⇒ D = (x1 - xavg) + (x2 - xavg) + (x3 - xavg) ... + (x1 - xavg) = 0

  • 𝑥avg =  (xassumed avg + (Deviation/No. of elements))

Median of a finite list of numbers can be found by arranging all the observations from lowest value to highest value and picking the middle one.
Mode is the value that occurs most often

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1. What is the CAT exam and what does it stand for?
Ans. The CAT exam, or Common Admission Test, is a computer-based test conducted in India for admission to various management programs offered by Indian Institutes of Management (IIMs) and other prestigious business schools. CAT stands for Common Admission Test.
2. How long is the CAT exam?
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