L1 Numeracy Workbook Answers - Skills Workshop, 2011 Page 26
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32L1 Numeracy work book
HD1/L1.3 Find the arithmetical average (mean) for a set of data
Name_____________________
To find the mean average, add up the values and divide them by the number of
items / categories.
1) From the previous exercise (page 25), find the average number of each brand sold
by the eBay perfume seller in July 2011.
Answer= 185
2)
Attendance at Birmingham Clubs
Club name
Thursday
Friday
Saturday
Sunday
night
night
night
night
Bank
231
430
515
121
Flares
287
454
498
132
Revolution
195
396
457
98
Oceana
220
510
646
175
a) What was the average number of clubbers on Thursday night?
Answer= 233.25 (233 rounded)
b) What was the average number of clubbers on Saturday night?
Answer= 529
c) What was the average number of clubbers at Revolution during all the nights?
Answer= 286.5 (287 rounded)
d) What was the average number of clubbers at Oceana on Saturday and Sunday?
Answer= 410.5 (411 rounded)
October 2011. Answers kindly contributed by Kevin Melling and Judith White, Somerset Skills & Learning. Workbook written and contributed
by Simon Kelsey, Steps to Work. September 2011. Search for Simon, Kevin and Judith on
Adult Numeracy and Functional Maths. For related resources visit the download page for this resource at skillsworkshop
Page 26 of 32
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