STATISTICAL TECHNIQUES AND TOOLS
MEASURES OF CENTER AND SPREAD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The first quartile (Q 1) is the median of the lower half of the set.2-The second quartile (Q 2) is the median of the whole set .3-The third quartile (Q 3) is the median of the upper half of the set.
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All three statements are true.
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Only the 1st statement is true.
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Only the 2nd and the 3rd statements are true.
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Only the 3rd statement is true.
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Explanation:
Detailed explanation-1: -The lower quartile, or first quartile (Q1), is the value under which 25% of data points are found when they are arranged in increasing order.
Detailed explanation-2: -First Quartile(Q1)=((n+1)/4)th Term also known as the lower quartile. The second quartile or the 50th percentile or the Median is given as: Second Quartile(Q2)=((n+1)/2)th Term. The third Quartile of the 75th Percentile (Q3) is given as: Third Quartile(Q3)=(3(n+1)/4)th Term also known as the upper quartile.
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