Sunil is testing, at the 5% significance level, whether there is any correlation between two variables in a population whose correlation coefficient is ρ\rhoρ.
Identify the correct alternative hypothesis for Sunil's test.
Tick one box.
H1:ρ=0H_1: \rho = 0H1:ρ=0
H1:ρ>0H_1: \rho > 0H1:ρ>0
H1:ρ<0H_1: \rho < 0H1:ρ<0
H1:ρ≠0H_1: \rho \neq 0H1:ρ=0
121 exam-style questions on OCR A Level Maths 2.2 Data Presentation and Interpretation, covering 2.2.1 Tables and diagrams for single variable data, 2.2.2 Area in a histogram, 2.2.3 Scatter diagrams and regression lines, 2.2.4 Informal interpretation of correlation, 2.2.5 Correlation and causation, 2.2.6 Measures of average and spread, 2.2.7 Calculations of mean and standard deviation, 2.2.8 Outliers, 2.2.9 Selecting or critiquing data presentation, and 2.2.10 Cleaning data. Each one has a worked solution and a mark scheme showing where the marks go.