Who’s left-handed? Students were asked, “Are you right-handed, lefthanded or ambidextrous?” The responses of the 50 randomly selected Canadian students are shown below (R  right-handed; L  left-handed;

A  ambidextrous).

R R R R R R R R R R R L R R R R R R R R R R R R R R R A R R R R A R R L R R R R L A R R R R R R R R

(a) Make an appropriate graph to display these data.

(b) Over 10,000 Canadian high school students took the CensusAtSchool survey in 2007–2008. What percent of this population would you estimate is left -handed?

Justify your answer.