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Flashcards in Quartiles and Percentiles Deck (8)
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1

whats a quartile?

a part of a data set that has been split into four

2

what is the first quartile?

the median of the lower half of the sample

3

what is the third quartile?

median of the upper half of the sample

4

what is the second quartile?

the median

5

what is the five number summary?

5 elements containing the three quartiles and the min and max values of the data set

6

whats the interquartile range?

q3-q1, descibes the amount of variation in the middle half of the observations

7

how to spot an outlier in a data set?

1.5*iqr
extreme if 3*iqr

8

whats a box plot?

graphical display of the five number summary as well as any outlier value