In a survey, of the respondents chose option A. Determine the percentage who chose option A.
2 marks
Mathematics Applications · Unit 3 · Topic 3.1
Bivariate data analysis
5 free questions, 5 calculator-free and 0 calculator-assumed, with worked solutions written like marking keys.
A least-squares analysis gives a correlation coefficient of . Determine the coefficient of determination.
2 marks
A least-squares line is . Predict when .
2 marks
In a two-way table, of the people in one row chose a particular category. Determine the row percentage.
2 marks
A data set has correlation coefficient . Determine the coefficient of determination.
2 marks