Measures Of Central Tendency

Question 1

What r measures of central tendency?

Answer 1

Mean
Mode
Median

Averages

Question 2

Ordinal is what measure

Answer 2

Median
Cannot add up scores as ranked + units r equal

Question 3

Interval measure

Answer 3

Mean
Takes all scores into account

Question 4

Nominal measure

Answer 4

Mode
Cannot rank nominal data

Question 5

Measures of dispersion

Answer 5

Standard deviation
Range
(How far data is from mean + how consistent variables are)

Question 6

Why is range an advantage

Answer 6

Quicker and easier to calculate than sd

Question 7

Interval measure for dispersion

Answer 7

Standard deviation as units r equal

Question 8

Ordinal measure of dispersion

Answer 8

Range as u cannot use so cause units aren’t equal

Question 9

Nominal measure of dispersion

Answer 9

Neither as data is in form of frequencies

Question 10

Negative skew

Answer 10

Tail is on left side
Mean = lowest no.
Mode = highest no.

(Remember on graph highest is lowest - opposite)

Question 11

Positive skew

Answer 11

Tail is on right side
Mean = highest
Mode is lowest

(Remember on graph highest is lowest - opposite)

Question 12

How to get nd

Answer 12

Make qs harder or use a larger sample