Question

 Below are the blood types of 16 blood donors.

O- A+ O- O+ AB- A-
A+ B+ O+ A+ B- O+
A- O+ B- B+

i. Make a frequency table using these 7 blood types: O+, O-, A+, A-, B+, B-, AB-
ii. What is (are) the mode(s)?
iii. Does it make sense to talk about the average for this data? Why or why not?
iv. Using your frequency table draw a pie chart to display the distribution of blood types by filling in the following table:
Type
Frequency
Percentage of total
Measure of Central Angle (in degrees)

O+

A+

B+

O-

A-

AB-

B-

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