Research Method: Quantitive Data Flashcards

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1
Q

What are the measures of central tendency?

A

Mean, median, mode

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2
Q

What is the strength of working out the mean of data?

A

+Uses all the data in the final calculation making it more valid.

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3
Q

What is a weakness of using mean?

A

-Affected by extreme values.

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4
Q

What is a strength of using median?

A

+Not affected by extreme scores.

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5
Q

What is a weakness of using median?

A

-Not all values are reflected in final calculation.

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6
Q

What is a strength of using mode?

A

+Useful when data is in categories (nominal).

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7
Q

What is a weakness of using mode?

A

-Not a useful way of describing days when there are several groups with the same mode.

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8
Q

How do you calculate the mean?

A

Add up all the values and divide by the number of values.

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9
Q

How do you measure the median?

A

Place all values in order and select the middle value.

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10
Q

How do you calculate the mode?

A

Identify the group with the highest of the same value.

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11
Q

What are measures of dispersion?
What do they show?

A

Range and standard deviation.
The spread of data.

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12
Q

How do you work out the range?

A

Arrange data in highest to lowest and subtract the lowest from the highest.

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13
Q

What is an advantage of measuring range?

A

+Convenient and easy way to measure how spread out the data is.

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14
Q

What is a disadvantage of measuring the range?

A

-Affected by extreme values.

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15
Q

What is an advantage of using standard deviation?

A

-Precise measure of dispersion that takes into account all values.

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16
Q

What is weakness of using standard deviation?

A

-Takes time to work out compared to the range.