The most common blood typing system divides human blood into four groups: A, B, O, and AB. The following bar graph presents the frequencies of these types in a sample of 150 blood donors.

a. Which is the most frequent type?

b. True or false: More than half of the individuals in the sample had type O blood.

c. True or false: More than twice as many people had type A blood as had type B blood.

Transcribed Image Text:

Frequency 10 0 A B AB