Year 2016
2017
2018
2019
2020
Price
17.8
29.6
41.1
46.5
46.3
w
2.2.1 Find the percentage increase in the price of laundry detergent between each
period.
(2)
2.2.2 Use the 4 percentages in question 2.2.1 above, to calculate the overall geometric
mean percentage increase in the price of laundry detergent each year. (3)
2.2.3 Interpret the geometric mean calculated in 2.2.2 above.
(3)
2.2
A manager informs 2 employees, Annie and Caroline, that their performance will
be rated according to categories with the percentage weightings shown in the
Table below. The one who obtains the largest weighted mean score will be
awarded a salary rise.