Topic: psychology- mathematics
Key points/ Notes/Diagrams:
Main Ideas/
6/10 x 100 = 60%
Questions:
Percentage increase = increase/ original number x 100 (difference between two
What is probability numbers compared).
used for?
Percentage decrease = decrease/ original number x 100
What is the formula
for percentage 1. 14-12 = 2
increase? 2/14 = 0.143
0.143 x 100 = 14.3%
What is the formula
for percentage 2. 123-117 = 6
decrease? = 0.483
0.483 x 100 = 4.88
What is the difference
between part-whole 75% = 0.75 (percentage to decimal)
ratio and part-to-part
ratio? Part-to-whole ratio (13 to the number of whole number of participants- 20)
- 13:20
How do you convert a
percentage to Part-to-part ratio (spoke more words from energy drink is 13, spoke more words
decimal? from water is 7)
- (13:7)
Probability- it is used to state the extent to which results of a study are due to
chance (extraneous variables)
- P ≤ 0.05 (5% or less by chance)
- 95% probability that results occurred due to the change in the IV
Summary:
● Probability is used to state the extent to which results of a study are due to chance (extraneous
variables)
● Part-to-whole ratio (a number to the whole number of participants)
● Part-to-part ratio (two certain parts that add up to the whole number of participants).
● Percentage increase = increase/original number x 100
● Percentage decrease = decrease/ original number x 100
Key points/ Notes/Diagrams:
Main Ideas/
6/10 x 100 = 60%
Questions:
Percentage increase = increase/ original number x 100 (difference between two
What is probability numbers compared).
used for?
Percentage decrease = decrease/ original number x 100
What is the formula
for percentage 1. 14-12 = 2
increase? 2/14 = 0.143
0.143 x 100 = 14.3%
What is the formula
for percentage 2. 123-117 = 6
decrease? = 0.483
0.483 x 100 = 4.88
What is the difference
between part-whole 75% = 0.75 (percentage to decimal)
ratio and part-to-part
ratio? Part-to-whole ratio (13 to the number of whole number of participants- 20)
- 13:20
How do you convert a
percentage to Part-to-part ratio (spoke more words from energy drink is 13, spoke more words
decimal? from water is 7)
- (13:7)
Probability- it is used to state the extent to which results of a study are due to
chance (extraneous variables)
- P ≤ 0.05 (5% or less by chance)
- 95% probability that results occurred due to the change in the IV
Summary:
● Probability is used to state the extent to which results of a study are due to chance (extraneous
variables)
● Part-to-whole ratio (a number to the whole number of participants)
● Part-to-part ratio (two certain parts that add up to the whole number of participants).
● Percentage increase = increase/original number x 100
● Percentage decrease = decrease/ original number x 100
