Mathematics

Mathematics

Problem

The table shows the marks obtained by 30 students in a test. Class interval (marks): 10–20, 30–40, 20–30, 40–50 Frequency: 6, 12, 8, 4 Which class interval is the median class? a) 20–3020\text{–}30 b) 30–4030\text{–}40 c) 10–2010\text{–}20 d) 40–5040\text{–}50

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