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8N4 Revision HW
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20784 Marks
a)
range:
A group of students were given a spelling test.
The table shows their marks
Mark
Frequency
b)
+
stud
6
5
a) Work out the range of the marks.
o)
7
4
mean:
8.
7
b) How many students are in the group?
9
10
10
4.
c) Work out the mean mark of the group.