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Numbers
on cards
Q1:
The mean of five numbers is given, four of the numbers
are known,
what is the unknown number?
Q2:
The mean and range of six numbers is given, four of the
numbers are equal and are known,
what are the unknown numbers?
Q3:
The mean, range and median of five numbers is given, three
of the numbers are known,
what are the unknown numbers?
Q4:
The mean, median and range of three mystery numbers is
given,
what are the unknown numbers?
Q5:
Mean Darts
Ben throws
three darts. The mean of his scores is 39 and the range is 42.
He scored a double 9 with his first dart. What did he score with the
other two darts?
Don't look at the darts for help. Click on the question marks to see
the scores.
Q6:
Mean, Median
and Range
Three
small numbers are generated. the mean, median and range are worked
out. Hide the three numbers, click on 'change'. Can you work out what
the three numbers are? Hide the range: is it still possible to work
out the three numbers?
Show two of the numbers, what is the third?
How much information is needed to enable you to work out the three
numbers and the three statisitics?
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