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Statistics — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsStatistics1 Mark
MCQ
To draw a histogram to represent the following frequency distribution:
Class interval
$5-10$
$10-15$
$15-25$
$25-45$
$45-75$
Frequency
$6$
$12$
$10$
$8$
$15$
The adjusted frequency for the class $25-45$ is:
  • A
    $5$
  • B
    $3$
  • ✓
    $2$
  • D
    $6$
✓

Answer

Correct option: C.
$2$

Adjusted Frequency $=\Big(\frac{\text{Frequncey of the class }}{\text{widthof the class}}\Big)\times5$
Therefore adjusted frequencey of $25-45=\frac{8}{20}\times5=2$

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