levels of data

Question 1

what is interval data?

Answer 1

measured in fixed units with equal distances between the units with no absolute zero

eg measuring temperature in °C

Question 2

what measure of central tendency is used for interval data?

Answer 2

any measure of central tendency

Question 3

what graph is used for interval data

Answer 3

usually represented using a histogram or frequency polygon

Question 4

what is ordinal data?

Answer 4

data presented in rank order, with data placed into groups telling us who is first second and third

eg amazon reviews ranging from one to five stars

Question 5

what measure of central tendency is used for ordinal data?

Answer 5

median is the best to use, however the mode can also be used

Question 6

what graph does ordinal data use?

Answer 6

usually shown using a bar chart

Question 7

what is nominal data?

Answer 7

frequency or count data which consists of the number of datas that fall into each category

eg number of students who have blue brown or green eyes

Question 8

what measure of central tendency is used for nominal data?

Answer 8

the mode