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Statistics Symbols - Q



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Symbol: Q

Meaning:
The Probability of non occurrence of the event.
Formula used:
q=1-p.

Symbol: Q1 ( or Q-one)

Meaning:
It is the first quartile.
Formula used:
Q1=The value for a given set of sorted values in ascending order, that is above 25% of the numbers and below 75 % of the numbers is referred to as the first quartile.
Used in:
Measures of Central Tendency.

Symbol: Q2 ( or Q-two)

Meaning:
It is the second quartile or the median.
Formula used:
Q2 = In an ordered data, it is the central value.
Used in:
Measures of Central Tendency.

Symbol: Q3 ( or Q-three)

Meaning:
It is the third quartile.
Formula used:
Q3 = The value for a given set of sorted values in ascending order, that is above 75% of the numbers and below 25 % of the numbers is referred to as the third quartile.
Used in:
Measures of Central Tendency.

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