Measures of central tendancy (mean mod median and standard deviation)

Question 1

what is a strength of using the mean?

Answer 1

-most SENSITIVE measure as it uses all the data

-representative of data as a whole.

Question 2

what is a strength of using the median?

Answer 2

-NOT effected by extreme values as it deals with MIDDLE values

Question 3

what is a strength of using the mode?

Answer 3

-very EASY to calculate compared to the others.

Question 4

what is a strength of using the range?

Answer 4

easy to calculate compared to standard deviation

Question 5

what is a strength of using the standard deviation?

Answer 5

-more PRECISE and SENSITIVE measure than the range as it uses all of the data.

therefore,

more REPRESENTATIVE of the whole data.

Question 6

what is a weakness of using the mean?

Answer 6

can be seriously DISTORTED by extreme values

Question 7

what is a weakness of using the median?

Answer 7

less sensitive than the mean as it doesn’t take into account of the values.

Question 8

what is a weakness of using the mode?

Answer 8

CRUDE measure, there also may be SEVERAL mode which is not very useful

Question 9

what is a weakness of using the range?

Answer 9

only looks at EXTREME values which may be UNREPRESENTATIVE of the data

Question 10

what is a weakness of using the standard deviation?

Answer 10

can be DISTORTED by extreme values