Unit 1 - Introduction

Question 1

What are four types of biological data?

Answer 1

-Ratios
-Intervals
-Ordinal
-Nominal

Question 2

What are examples of non-parametric tests?

Answer 2

-Mann Whitney
-Wilcoxon signed-rank

Question 3

What are dependent variables?

Answer 3

Is the variable that is being measured in our observations

Question 4

What are independent variables?

Answer 4

An explanatory factor in a model

Question 5

What is continuous data? (Ratio data in SPSS)

Answer 5

Infinite number of values between two points eg. length

Question 6

What is discrete data?

Answer 6

Is observations that exist on a limited number of values eg. number of teeth

Question 7

Describe ranked or ordinal data.

Answer 7

Eg. Stress levels, where no stress is 0 and highly stressed is 5

Question 8

What are examples of categorical qualitative data?

Answer 8

-Nominal data, which is unranked categories, gender
-Ordinal data, which is ranked category, age

Question 9

What are examples of scale quantitative data?

Answer 9

Interval data- no fixed origin or fixed distance, temperature
Ratio data- fixed origin, fixed distance
age (yrs) length (cm)

Question 10

Describe parametric statistics.

Answer 10

-Make assumptions about the data
-Data must follow normal distribution
-Powerful

Question 11

Describe non-parametric statistics.

Answer 11

-Does not make assumptions about the data
-Data usually transformed into ranks
-Less powerful