- [Maximum mark: 14]
(a) For the happiness score, find
(i) the upper quartile [2]
(ii) the interquartile range. [2]
(b) Show that Switzerland’s happiness score is not an outlier for this data. [3]
(c) Write down the value of
(i) a [1]
(ii) b [1]
(iii) c. [1]
(d) (i) Find rₛ. [2]
(ii) If France’s happiness score is upgraded to 6.9, explain why the value of rₛ does not change. [1]
(e) State, with a reason, whether Jose’s conclusion is appropriate. [1]