passwella.
Menu

WAEC Further Mathematics 2014 Question 19

Question 19

Statistics

The table shows the distribution of ages of members of a cultural Troupe.
Age (years): 10 − 14, 15 − 19, 20 − 24, 25 − 29, 30 − 34
Frequency: 6, 8, 14, 10, 12
In which group is the upper quartile?

  1. A.(15 − 19)
  2. B.(20 − 24)
  3. C.(25 − 29)
  4. D.(30 − 34)
Show the answer and explanation

Answer: C ((25 − 29))

Explanation

¾ × 50 = 37.5th member; cumulative frequencies 6, 14, 28, 38, so it is in 25 − 29.