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Here is a table of information about the wingspan of bats. Unfortunately, two entries are missing from the table.

Student Data set (wingspans in cm) Mean (cm)
A 13 - 16 12 10 15 13
B 13 16 - 13      

Student A collected 6 measurements and worked out that their mean was 13cm.
Student B collected 4 measurements.
The overall mean of the combined data was 13.4cm.

Can you work out what the two missing values are?

 

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