Week 11

Question 1

statistical techniques

Answer 1

descriptive and inferential statistics

Question 2

3 types of descriptive statistics

Answer 2

frequencies
measures of central tendency
variability

Question 3

mean

Answer 3

most common; most useful when a data set does not have any outliers

Question 4

kurtosis

Answer 4

distributions which are normal, but which are flatter or more peaked (taller) than a typical normal distribution
mesokurtic
leptokurtic
platykurtic

Question 5

mesokurtic

Answer 5

middle height and width

Question 6

leptokurtic

Answer 6

graph is taller and thinner than is typical

Question 7

platykurtic

Answer 7

graph is short and broader than usual

Question 8

two primary values used to summarise/describe score distribution (basic descriptive statistics)

Answer 8

central tendency and variability

Question 9

range is a noisy measure because

Answer 9

A large/small score will produce a large range even if the other scores are closely clustered together
Because only the smallest and largest scores are considered, it does not provide an accurate representation of the distribution’s variability