Quartile
Posted on Friday, December 16, 20 Quartiles are values that divide a cluster observations into four equal parts. These values, which are denoted by Q1, Q2, and Q3, have the property that 25% of the data fall below Q1, 50% of the data fall below the Q2, and 75% of the data fall below Q3.
Example: Consider the life of a car battery table below, and find the first quartile (Q1).
Answer: To calculate the distribution of Q1 for battery life, there are required values below (25/100) X 40 = 10 observations. Due to the observation that the 10 and the 11 equal to 3.1 years, the rat-prestudy also 3.1 years so Q1 = 3.1 years.
Quartile
As for the count quartile of the data that has been arranged in the form of frequency distributions (grouped data), use the following formula.
Posted on Friday, December 16, 20 Quartiles are values that divide a cluster observations into four equal parts. These values, which are denoted by Q1, Q2, and Q3, have the property that 25% of the data fall below Q1, 50% of the data fall below the Q2, and 75% of the data fall below Q3.
Example: Consider the life of a car battery table below, and find the first quartile (Q1).
Answer: To calculate the distribution of Q1 for battery life, there are required values below (25/100) X 40 = 10 observations. Due to the observation that the 10 and the 11 equal to 3.1 years, the rat-prestudy also 3.1 years so Q1 = 3.1 years.
Quartile
As for the count quartile of the data that has been arranged in the form of frequency distributions (grouped data), use the following formula.
Consider the table below, determine Q for the distribution of weight 50 suitcases.
Answer: It takes a value below it there (75/100) X 50 = 37.5 pengmatan. There are 27 observations under 15.5, so still needed 10.5 of the 15 subsequent observations. Thus obtained,
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