Quartiles and Percentiles Flashcards Preview

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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