Flashcards in Quartiles and Percentiles Deck (8)
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1
Q
whats a quartile?
A
a part of a data set that has been split into four
2
Q
what is the first quartile?
A
the median of the lower half of the sample
3
Q
what is the third quartile?
A
median of the upper half of the sample
4
Q
what is the second quartile?
A
the median
5
Q
what is the five number summary?
A
5 elements containing the three quartiles and the min and max values of the data set
6
Q
whats the interquartile range?
A
q3-q1, descibes the amount of variation in the middle half of the observations
7
Q
how to spot an outlier in a data set?
A
1.5*iqr
extreme if 3*iqr
8
Q
whats a box plot?
A
graphical display of the five number summary as well as any outlier value