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Psychology - research methods > Descriptive statistics > Flashcards

Descriptive statistics Flashcards

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1
Q

Identify the two types of descriptive stats

A
  • measures of central tendency
  • measures of dispersion
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2
Q

explain what is meant by measures of central tendancy

A

refers to averages

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3
Q

Explain what is meant by measures of dispersion

A

How spread out the scores are

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4
Q

identify the 2 measures of dispersion

A
  • range
  • standard deviation
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5
Q

Identidy 2 measures of central tendancy

A
  • mean
  • median
  • mode
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6
Q

explain the mode

A

most requent score in a data set

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7
Q

strengths of the mode

A
  • not easily affected by outliers
  • helpful for discrete data
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8
Q

limitations of the mode

A
  • small data sets may have multiple or even no modes
  • doesnt include all values so it is not sensitive
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9
Q

explain what is meant by the median

A

central position within a data set

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10
Q

strengths of the median

A
  • not affected by outliers
  • easy to calculate
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11
Q

limitations of the median

A
  • does not include all the values within the data set
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12
Q

what is the mean ?

A

mathematical average calculated by adding all the values and then dividing by how many their are

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13
Q

limitation of the mean

A

easily distorted by outliers

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14
Q

outline what is meant by the range

A

difference between the highest and lowest values from a data set

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15
Q

strengths of the range

A
  • easy to calculate
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16
Q

limitation of the range

A
  • easily distorted by extreme scores
17
Q

outline what is meant by the standard deviation

A

uses all data points to produce a single number - the smaller the value the less spread out the scores are around the mean

18
Q

strengths of the standard deviation

A
  • detils the dispersion of scores
  • includes all values
19
Q

limitation of the SD

A
  • distorted by extreme values
  • SD is more difficult to calculate

Psychology - research methods (16 decks)

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