analysis of data Flashcards
(27 cards)
define primary data
primary data is collected by the person who will use the data
give 4 examples of primary data
surveys, observations, experiments, quetionaires
5 pros of primary data
real time, specific to needs of the researcher, reliable, flexible, know how it was collected
3 cons of primary data
expensive, time consuming, limit of samples size
define secondary data
secondary data is collected by someone else, maybe for different people
give 4 examples of secondary data
websites, publications, books, journals
4 cons of secondary data
past data (old), may be unreliable, unknown selection methods (may be bias), may not be specifically for your survey
4 pros of primary data
economical, not time consuming, easy to obtain, inexpensive
define qualitative data
non numerical
3 examples of qualitative data
eye colour, fav movie, make of car
define quantitative data
numerical
3 examples of quantitative data
height, number of cars, hourly wage
what type of data does discrete and continuous data fall under
quantitative data
define discrete data
only specific value
3 examples of discrete data
age in years, shoe size, num of pens in box
define continuous data
can take any value
3 examples of continuous data
height, wage, weight
define census
data is taken from the entire population
define sample
data is only taken from some of the population
define population
whole group from which the data could be taken
3 pros for sample
less time consuming, less data to process, less expensive
a pro for census
gives complete result
2 cons for a sample
data might not be accurate, sample not as large (to give a good inference)
4 cons for a census
expensive, time consuming, lots of data to process, cant be used when testing
