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Probability - Summary of Descriptive statistics and probability | 11th Business Mathematics and Statistics(EMS) : Chapter 8 : Descriptive statistics and probability

Chapter: 11th Business Mathematics and Statistics(EMS) : Chapter 8 : Descriptive statistics and probability

Summary of Descriptive statistics and probability

A measure which divides an array into four equal parts in known as quartiles.

Summary

A measure which divides an array into four equal parts in known as quartiles.

A measure which divides an array into ten equal parts is known as deciles.

A measure which divides an array into hundred equal parts is known as percentiles

Q2 = D5 = P50 = Median

Inter quartile range = Q3Q1


The conditional probability of an event A given the occurrence of the event B is given by


Baye’s Theorem:

If E1 , E2 , E3 ,..., En  are a set of n mutually exclusive and collectively exhaustive events with P(Ei) ≠ 0 (i =1,2,3…,n)n, then for any arbitrary event A which is associated with sample space    such that P(A) > 0, we have


 

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11th Business Mathematics and Statistics(EMS) : Chapter 8 : Descriptive statistics and probability


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