Mathematics · Statistics
Find the class interval corresponding to the class mark xi = 27, where the lower limit of the first continuous class interval is 7. Given class marks (xi) and frequencies (fi) are: xi = 11, fi = 3 xi = 19, fi = 7 xi = 27, fi = 11 xi = 35, fi = 5 xi = 43, fi = 3
- 122 – 32
- 223 – 31✓
- 324 – 30
- 421 – 33
Correct answer
23 – 31
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