Statistics

Question 1

Name and age are examples of what type of data?

Answer 1

Nominal

Question 2

Ordinal data is what?

Answer 2

Data that is ranked in a hierarchy

Question 3

Temperature is an example of what type of data?

Answer 3

Scale- interval continuous

Question 4

What is scale ratio continuous data?

Answer 4

Units of measurement that begin at zero

Question 5

When your counting the number of people, that data would be called what?

Answer 5

Scale- ratio discrete. Because you can’t have half a person.

Question 6

What would repeated measures of the same subject be, compared with measures of two different groups?

Answer 6

Related, unrelated

Question 7

Parametric data has what sort of curve on a graph?

Answer 7

Bell curve

Question 8

What averages are best used to describe a non-parametric dataset?

Answer 8

Median and Interquartile range

Question 9

What can you use to decide on an appropriate test for your dataset?

Answer 9

Null hypothesis significance test choosing chart

Question 10

If you are expecting a difference between groups in your dataset, what type of test can you use?

Answer 10

One-tailed test

Question 11

What type of statistical data will test a hypothesis?

Answer 11

Confirmatory

Question 12

What type of statistical data will generate a hypothesis?

Answer 12

Exploratory

Question 13

What is discrete numerical data?

Answer 13

Data that can only have whole number values. e.g. number of children, you can’t have half a child.

Question 14

Categorical data can also be called what?

Answer 14

Qualitative

Question 15

Give an example of binary data?

Answer 15

Yes/No, Dead/Alive, Disease/No disease

Question 16

What type of data has more than two categories but no particular order?

Answer 16

Nominal

Question 17

What type of data has more than two categories and is ordered?

Answer 17

Ordinal

Question 18

When calculating averages with data that has some outliers, which method may be best?

Answer 18

Median

Question 19

In data that has a symmetrical distribution and fits in a bell curve, which is larger, the mean or median?

Answer 19

Both should be the same.

Question 20

In data with a skewed distribution, which is more accurate, mean or median?

Answer 20

Median

Question 21

The difference between the smallest and largest value in a dataset is called what?

Answer 21

Range

Question 22

What is variance and how is it calculated?

Answer 22

The mean of squared deviations from the mean

Question 23

How would you calculate standard deviation from variance?

Answer 23

Square root the variance

Question 24

The interquartile range are the data between what values?

Answer 24

Between 25%-75% percentile

Question 25

If the data is normally distributed, what are the chances of a value falling within +/- 3 standard deviations of the mean?

Answer 25

~ 99%

Question 26

If the data is normally distributed, what are the chances of a value falling within +/- 1 standard deviations of the mean?

Answer 26

~ 68%

Question 27

A leptokurtic curve is what shape?

Answer 27

Spiky

Question 28

A platykurtic curve is what shape?

Answer 28

Flat

Question 28

What value describes the precision of a sample mean compared with the mean for the larger population?

Answer 28

Standard error of the mean

Question 28

What method can be used to calculate the sample size you will need to detect an effect in a study?

Answer 28

Power analysis