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Question 71 of 71
Q.

Calculate the median from the following distribution :

MarksNumber of students
0 – 55
5 – 107
10 – 1510
15 – 208
20 – 256
25 – 304
ChseodishaCHSE Odisha Plus Two (Class 12) Commerce Board 2024Subjective· 8mImportance★★★★★est
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Median class 10–1510\text{–}15; applying the formula gives Median =14=14 marks.

Step 1 — cumulative frequencies (N=40N=40):

MarksffCumulative freq (cf)
0 – 555
5 – 10712
10 – 151022
15 – 20830
20 – 25636
25 – 30440

Step 2 — median class: N2=402=20\dfrac{N}{2}=\dfrac{40}{2}=20. The first cf ≥20\ge20 is 2222, so the median class is 10–1510\text{–}15.

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