types of data and sampling

Question 1

example of quantative data?

Answer 1

time

Question 2

what is judgement sampling?

Answer 2

use your judgement to select a sample that is representative of your population

Question 3

what is systematic sampling?

Answer 3

choose a starting point from the sampling frame at random and then choose items at regular intervals eg every 5th person in a list

Question 4

what is cluster sampling?

Answer 4

used when the data naturally splits into groups eg geographical areas

Question 5

what is the sample and the sampling frame in cluster sampling?

Answer 5

sample-some clusters
sampling frame-list of clusters

Question 6

what is an example of qualitative data?

Answer 6

colour

Question 7

what is qualitative data?

Answer 7

categorical data-anything that isnt a number eg, football teams, countries etc

Question 8

what is an outlier/anomalous data?

Answer 8

a value that doesnt fit the pattern of the data

Question 9

what is an example of primary data?

Answer 9

a tally you make of car types

Question 10

what does cleaning data mean?

Answer 10

identifying and correcting or removing inaccurate data values or extreme values

Question 11

what is quota sampling?

Answer 11

group the population by characteristics such as age,gender etc
-then interview a quota (number) from each group

Question 12

what is extraneous data?

Answer 12

variables that youre not interested in but could affect the results of the experiment

Question 13

what is discrete data?

Answer 13

can only take certain exact numerical values eg number of children

Question 14

what is bivariate data?

Answer 14

involves pairs of related data

Question 15

what is multivariate data?

Answer 15

data that involves sets of 3 or more related data values

Question 16

what is ordinal data?

Answer 16

data that can be written in order or can be given a numerical rating scale

Question 17

an example of continuous data?

Answer 17

height

Question 18

an example of secondary data?

Answer 18

information from a website

Question 19

what is categorical data?

Answer 19

data that can be sorted into non-overlapping categories

Question 20

example of discrete data?

Answer 20

number of aunts

Question 21

what is quantitative data?

Answer 21

numerical data- 2 types of quantitative data-continuous and discrete

Question 22

what is continuous data?

Answer 22

can take any numerical value eg height, weight

Question 23

what is secondary data?

Answer 23

data that has already been collected by someone else

Question 24

what is primary data?

Answer 24

data that you collect first hand

Question 25

what is opportunity sampling?

Answer 25

use the people (or objects) that are available at the time