The numbers of goals, x, scored by a team in each of its previous 25 games are
Question:
The numbers of goals, x, scored by a team in each of its previous 25 games are summarised by the totals
Σ(x −1)2 = 30 and Σ(x −1) = 12.
a. Find the mean number of goals that the team scored per game.
b. Find the value of x2.
c. Find the value of a and of b in the following table, which shows the frequencies of the numbers of goals scored by the team.
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Related Book For
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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