data collection

Question 1

what is qualitative data ?

Answer 1

data that is opinion based and uses words such as a survey

Question 2

what is quantitative data ?

Answer 2

data that is numerical such as a bar chart

Question 3

what is primary data ?

Answer 3

data you collected yourself

Question 4

what is secondary data ?

Answer 4

data that someone else has produced from doing their own research

Question 5

what are the benefits and problems with finding the median ?

Answer 5

benefits - reduces the influence of outliers and anomalies
- represents the centre
problems - can be difficult with large data sets
- only possible when data can be ordered

Question 6

what are the benefits and problems the mean ?

Answer 6

benefits - can be used with any data set

problems - can be greatly influenced by anomalies

Question 7

what are the benefits and problems with the mode ?

Answer 7

benefits - shows us the most frequent response
problems - doesn’t represent the centre - not possible for data sets where each number only appears once
- there maybe more than one mode