Quantitative data

Question 1

what is the three types of probability?

Answer 1

classical, relative frequency, subjective

Question 2

what is classical probability?

Answer 2

Classical probability is used when everyone can be shown to agree with the outcomes of specific events occurring such as the throw of two unbiased dice

Question 3

What is a relative frequency probability?

Answer 3

Relative Frequency probability occurs when events are measured such as the occurrence of the number of people, vehicles etc. Passing a particular point within a given time.

Question 4

what is subjective probability?

Answer 4

Subjective probability occurs when both Classical and
Relative Frequency probability cannot be used.

Question 5

what is a normal distribution used for?

Answer 5

The Normal distribution is used when we know the population standard deviation of the distribution.
The students’ ‘t’ tables are used when we do not know the population standard deviation (the usual
case) but we can find the sample standard deviation.

Question 6

What is regression theory?

Answer 6

Regression theory consists of identifying by calculation, the intercept term (i.e. the commencing points
on the vertical axis) and the slope term, of a linear line that best explains the linear association
between two sets of variables.