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Description
Flashcards by Charlotte Hewson, updated more than 1 year ago
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Created by Charlotte Hewson
over 9 years ago
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| Question | Answer |
| what is quantitative data? | numerical data that can be counted. represents how much, how many, how long etc. |
| how is quantitative data presented? | in tables or granphs |
| what is qualitative data? | express the quality of something. includes descriptions, words, meanings etc. |
| what can be done with this data? | put into quantitative data by placing it in categories |
| what are the three measures of central tendency? | mean median and mode |
| what are two measures of dispersion? | range and standard deviation |
| what does range show? | the difference between the highest and lowest value in a data set |
| what does standard deviation show? | amount of variation in the data set and assesses the data around the mean |
| what is a strength of quantitative data? | its easier to analyse than qualitative data |
| why? | numerical data can be summarised using graphs and measures of central tendency and dispersion |
| what does this make easier? | drawing conclusions |
| what is a limitation of quantitative data? | tends to oversimplify reality and human experience |
| how does it suggest this? | it suggests there are simple descriptions of human behaviours that can be expressed by numbers |
| what is a strength of qualitative data? | it can represent true complexities of human behaviour |
| how does it do this? | it illustrates peoples thought and feelings that cant be done using numbers |
| what is a problem with using qualitative data? | summarising this data can be effected by personal beliefs and expectations |
| what is a strength of using the mean? | it makes use of all the values in the final analysis |
| what is a limitation of using the mean? | it can be mis-representative if the data has extreme values |
| what is a strength of the median? | it isn't affected by extreme scores |
| what is a limitation of the median? | not always as 'sensitive' as the mean because not all values are reflected |
| what is one strength of the mode? | useful when data is in categories |
| what is a limitation of the mode? | it isn't a useful way of describing data when there are several modes |
| what is a strength of the range? | its easy to calculate |
| what is a limitation of the range? | its effected by extreme values |
| what is a strength of s.d.? | a more precise measure of dispersion as all values are used in calculation |
| what is a limitation of s.d.? | it may hide some characteristics of data e.g. extreme values |
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