Measures of central tendancy Flashcards

1
Q

How do you calculate the mean?

A

Add all numbers and divide by number of participants.

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2
Q

How do you calculate the median?

A

Order all data from smallest to biggest and find the middle number.

If two of the same number, add up and divide by two.

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3
Q

How do you calculate the mode?

A

Most frequent number in the set of data.

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4
Q

What is one strength of the mean and one weakness?

A

STRENGTH: Includes all data so more representative.
WEAKNESS: Skewed by extreme values

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5
Q

What is one strength and one weakness of the median?

A

STRENGTH: Not skewed by outliers
WEAKNESS: Can be very time consuming with large sets of data.

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6
Q

What is one strength and one weakness of the mode?

A

STRENGTH: Can be used with non-numerical data
WEAKNESS: Not useful is there is no most frequent value

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