measures of central tendancy (mean mod median and standard deviation) Flashcards
what is a strength of using the mean?
-most sensitive measure as it uses all the data
-represantative of data as a whole.
what is a strength of using the median?
-not effected by extreme values as it deals with middle values
what is a strength of using the mode?
-very easy to calculate compared to the others.
what is a strength of using the range?
easy to calculate compared to standard deviation
what is a strength of using the standard deviation?
-more precise and sensitive measure than the range as it uses all of the data.
therefore,
more representative of the whole data.
what is a weakness of using the mean?
can be seriously distorted by extreme values
what is a weakness of using the median?
less sensitive than the mean as it doesn’t take into account of the values.
what is a weakness of using the mode?
crude measure, there also may be several mode which is not very useful
what is a weakness of using the range?
only looks at extreme values which may be unrepresentative of the data
what is a weakness of using the standard deviation?
can be distorted by extreme values