Bivariate Data Analysis
We estimate MS12-BD is worth about 8 marks out of 100 under the new Mathematics Standard 2 syllabus. Practise 8 exam-style questions (multi-part, multiple choice) with instant marking and a worked solution for every question.
START PRACTISINGExample questions
Example 1 · 1 mark · multiple choice
Pearson's correlation coefficient for a data set is . Which is the best description?
- AStrong positive linear association
- BWeak negative linear association
- CPerfect positive linear association
- DWeak positive linear association
Example 2 · 1 mark · multiple choice
In a city, monthly ice cream sales and the number of drownings are strongly positively correlated. Which statement is correct?
- AThe correlation must be a calculation error
- BEating ice cream causes drowning
- CA third variable, such as hot weather, may explain both
- DDrowning causes people to buy ice cream
Example 3 · 3 marks · multi-part
The table shows the maximum temperature and the number of ice creams sold at a kiosk.
| Temperature (°C) | 18 | 21 | 24 | 27 | 30 | 33 |
|---|---|---|---|---|---|---|
| Ice creams sold | 120 | 145 | 160 | 190 | 205 | 240 |
Use your calculator's statistics functions.
Answers and worked solutions appear when you practise these questions.
Other Mathematics Standard 2 topics
- MS11-FEFormulas and Equations
- MS11-LRLinear Relationships
- MS11-EMEarning Money
- MS11-MMManaging Money
- MS11-AMApplications of Measurement
- MS11-TLTime and Location
- MS11-NPNetworks, Paths and Trees
- MS11-DAData Analysis
- MS12-ARAlgebraic Relationships
- MS12-ILInvestment and Loans
- MS12-ANAnnuities
- MS12-TRTrigonometry
- MS12-RRRatios and Rates
- MS12-NFNetwork Flow
- MS12-CPCritical Path Analysis
- MS12-RPRelative Frequency and Probability
- MS12-NDThe Normal Distribution