stats Flashcards
1
Q
when would you use s^2 over
o-^2
A
because the researcher is estimating a parameter for a larger population with a sample
2
Q
when would you use s over
o-
A
the researcher will use this data to make an estimate of a spread of a larger population
3
Q
why remove outlier
A
could be an error
4
Q
why not remove outlier
A
if data true it will provide a false representation of the data
5
Q
mode
A
does not use all the data not representative if it has a low frequency' maybe other values of similar frequency not affected by outliers non-numerical data
6
Q
median
A
not affected by outliers ‘
not effected much by errors
does not use all data
7
Q
mean
A
very large data with few extreme values
data is small kinda useless
8
Q
range
A
reflects full data set
distorted by outliers
9
Q
iqr
A
not distorted by outliers
does not reflect all the data
10
Q
standard deviation
A
when data is small few outliers have as big impact
when the data is large
