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[DOC File]The Practice of Statistics
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Write the data in numerical order and find the first quartile, the median, the third quartile, the smallest value and the largest value. median = 80 first quartile = 70 third quartile = 90 smallest value = 65 largest value = 100 Place a circle beneath each of these values on a number line. Draw a box with ends through the points for the first ...
how to find the first quartile

[DOC File]Section 1 .edu
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How do you find first quartile Q1 and third quartile Q3? What is the Interquartile Range (IQR)? Is the IQR and the quartiles a resistant measure of spread? Explain. How is the IQR used to identify outliers? What is the five-number summary of a distribution?
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[DOC File]Percentiles & Quartiles:
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The first quartile is located 0.67 standard deviation below the mean, and the third quartile is located 0.67 standard deviation above the mean. In other words, we have the following formulas. and ( Example L. The scores on a marketing exam were normally distributed with …
first and third quartile finder

Quartile Calculator - Find Q1, Q2, Q3 & IQR (Statistics)
The third quartile Q3 is the median of the upper half of the data; that is, it is the median of the data falling above Q2 (and not including Q2). To help you find the median easily use the median rank for n pieces of data, Median Rank = _n + 1_ 2 If the rank is a whole number, the median is the value in that position.
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Find the first and third quartile