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Consider the following bar chart:

Which of the following are true?

  1. Number of students who scored $A$ in Algebra is higher than the number of students who scored $A$ in Calculus
  2. Percentage of students who scored $A$ or $B$ in algebra is lower than the percentage of students who scored $A$ or $B$ in calculus
  3. Calculus is easier than algebra
  4. Considering this data, the average percentage of students scoring $A$ is $12\%$
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  1. is worng, As per graph % of students in agebra is higher than % of student in calculus, however there is difference in term “number of student” and “% of students”. Hence we cant comment on number of student seeing % of student graph & it can be reverse for number of student.
  2. worng if you roughly (% student scoring A in algebra i.e 16 + % student scoring B in agebra 38) > (% student scoring A in calculus i.e 8 + % student scoring B in calculus i.e 32)
  3. right its subjective cant comment, also we cant comment on number of student scoring grade A/B based on % graph
  4. right (% student scoring A in algebra i.e 16 + % student scoring A in calculus i.e. 8) / 2 = 12
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