ams 102 chapter 5 summary

ams 102 chapter 5 summary - Chapter 5 Summarizing Data...

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Chapter 5 – Summarizing Data Numerically Key terms: measure of center: numerical value that tends to report in some sense the middle of a set of data mean: sum of the observation values divided by the number of observations (the observations are of a quantitative variable); value of mean can be any real number (positive or negative) median: value such that at least half of the observations are less than or equal to that value and at least half the observations are greater than or equal to that value mode: most frequently occurring value range: simplest measure of variability – difference between max. and min. value interquartile range (IQR): measures the spread of the middle 50% of data pth percentile: value such that p% of the observations fall at or below that value and (100-p)% of the observations fall at or above that value quartiles (for example Q1, Q3): 25%, 50%, and 75% percentiles five-number summary: set of five numbers that provide a good summary of the entire set of values
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This note was uploaded on 04/07/2008 for the course AMS 102 taught by Professor Adriennechu during the Spring '08 term at SUNY Stony Brook.

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ams 102 chapter 5 summary - Chapter 5 Summarizing Data...

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