Module 2 Flashcards
Response Bias
Question ‘is not’ persuasive (convincing). you can’t answer truthful; unintentional.
Example: Participant answers questions in a way they think the researcher wants.
Conscious Bias
Question ‘is’ persuasive (convincing).
Lack of Blinding
When participants or researchers know the treatment, leading to biased results.
Scatter Diagrams
Helps us find relationships or correlations between 2 variables (independent & dependent).
Correlation
Shows how two variables change together.
Probability
Measures how likely something is to happen.
Complement = 1 (Probability of the event)
Bayes Theorem
It helps adjust your predictions when new data arrives.
Keyword: Given that
Mean
Average; calculated by adding all the values and dividing by the total number of values.
Mode
Most often; KEYWORD: Typical
Median
Middle Value; If there is an even number of values, it’s the average of the two middle numbers.
Variance
is the average of the squared differences from the mean.
If the answer is Negative then you square it. Then do the average.
Standard Deviation
Is the spread of data set.
Z-Score
shows how far a number is from the average. Positive means above, negative means below.
Correlation is between
0 - 1
Strong Relationships =
1; has a number.
Weak Relationship =
0; is not given a number.
Correlation is NOT
a causation.
Keywords for Multiple Principle
AND, ALL, BOTH, EVERY, IN A ROW
Multiple Principle Calculates
Intercept
Multiple Principle Calculates
Intercept
Keywords for Addition Principle:
OR, EITHER, OTHER
Addition Principle calculates
Union
Standard Deviation is the square root of..
Variance
Known Probabilities
68.2% =
+/- 1
Known Probabilities
95.4%
+/- 2
Known Probabilities
99.7%
+/- 3
To calculate the Z-Score:
(Me - Mean score. Then divide by Standard Deviation.
