Mathematics 7357: Data presentation and Interpretation Topical Past Paper Questions

The annual cost of energy in 2021 for each of the 350 households in Village A can be modelled by a random variable £X It is given that $$ \sum x=945~000\quad\quad\quad\quad\quad\sum x^{2}=2~607~500~000 $$ (a) Calculate the mean of $X$. [1 mark] (b) Calculate the standard deviatio…

Which of the following is not a possible value for a product moment correlation coefficient? Circle your answer. [1 mark] $$ -\frac{6}{5}\quad-\frac{3}{5}\quad0\quad1 $$

A reporter is writing an article on the $ CO_{2} $ emissions from vehicles using the Large Data Set. The reporter claims that the Large Data Set shows that the $ CO_{2} $ emissions from all vehicles in the UK have declined every year from 2002 to 2016. Using your knowledge of the…