Lesson 1.1.5
1.1.5 Correlation: data and positive, negative and no correlation Quiz: OCR Psychology, Unit 1
20 questions
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Lesson 1.1.5, Correlation: data and positive, negative and no correlation: 20 multiple choice questions for the OCR Psychology (H567), Unit 1: Research methods (Component 01), written with Revision Ninja.
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The 20 questions
-
What type of graph is used to display correlational data?
- Pie chart
- Bar chart
- Scattergram
- Histogram
-
What term describes two variables measured in a correlational study?
- Independent variables
- Extraneous variables
- Dependent variables
- Co-variables
-
What relationship exists when both variables increase together?
- Zero correlation
- Curvilinear correlation
- Negative correlation
- Positive correlation
-
What relationship exists when one variable increases as the other decreases?
- Negative correlation
- Perfect correlation
- Zero correlation
- Positive correlation
-
What correlation coefficient indicates a perfect negative correlation?
- -1.0
- 0.0
- -0.5
- +1.0
-
What correlation coefficient indicates no relationship between co-variables?
- 0.0
- +1.0
- -1.0
- +0.5
-
Which key limitation applies to all correlational research?
- Lacks numerical data
- Requires control group
- Cannot show causation
- Uses manipulation
-
What numerical value measures the strength and direction of a correlation?
- Correlation coefficient
- Mean score
- Standard deviation
- Chi-square value
-
Higher temperature relates to higher ice cream sales. What correlation is this?
- Positive correlation
- Zero correlation
- Negative correlation
- Curvilinear correlation
-
More hours spent revising relates to fewer exam errors. What correlation is this?
- Negative correlation
- Perfect correlation
- Zero correlation
- Positive correlation
-
Shoe size and IQ score show no pattern on a scattergram. What correlation exists?
- Negative correlation
- Zero correlation
- Perfect correlation
- Positive correlation
-
A study finds a correlation coefficient of +0.85 between stress and heart rate. What is this?
- Zero correlation
- Strong positive
- Strong negative
- Weak positive
-
A study finds a correlation coefficient of -0.15 between age and memory recall. What is this?
- Perfect negative
- Weak negative
- Weak positive
- Strong negative
-
A researcher predicts that height and weight will be positively correlated. What hypothesis is this?
- Alternative non-directional
- Null
- Directional
- Non-directional
-
A researcher predicts a relationship between sleep hours and test scores without specifying direction. What hypothesis is this?
- Directional
- Null
- Non-directional
- Causational
-
Stress and illness correlate positively, but a third factor like poor diet may cause both. What is this factor?
- Independent variable
- Intervening variable
- Control variable
- Dependent variable
-
How does correlational data differ fundamentally from experimental data?
- No IV manipulation
- No qualitative data
- No statistical analysis
- No quantitative data
-
What relationship shows performance rising with arousal then falling after an optimal point?
- Linear negative
- Curvilinear correlation
- Zero correlation
- Linear positive
-
Data points forming a straight line from top-left to bottom-right show what correlation?
- Strong positive
- Zero correlation
- Perfect negative
- Perfect positive
-
Why might a researcher choose a correlational study over an experiment?
- Proves causal links
- Controls extraneous variables
- Ethics prevent manipulation
- Guarantees ecological validity
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