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Data Interpretation · Question 52 of 75

According to the Patna coaching centre's attendance graph, what was the average attendance of the morning…

Question 52

MediumOriginal question

According to the Patna coaching centre's attendance graph, what was the average attendance of the morning batch over the six days?

Line graph with two lines titled Coaching centre attendance. Morning batch: Monday 40 students; Tuesday 44 students; Wednesday 38 students; Thursday 50 students; Friday 46 students; Saturday 52 students. Evening batch: Monday 30 students; Tuesday 36 students; Wednesday 42 students; Thursday 34 students; Friday 40 students; Saturday 61 students.
Options for question 52

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. Morning total: 40+44+38+50+46+52=27040 + 44 + 38 + 50 + 46 + 52 = 270.

  2. Average: 270÷6=45270 \div 6 = 45.

Worth noting

40.5 is the evening batch's average, read from the wrong line. 54 divides by 5 instead of 6. 42.75 averages both batches together.

Concept
Mean of one line's values
Typical time
80 s
Your time
—
The rule this testsLine graphs
Practise this chapter →

Ten questions from Data Interpretation, at your own pace.

Practise this chapter →

Ten questions from Data Interpretation, at your own pace.