Question
Download Solution PDFFind the variance of 42, 24, 32, 64, 68?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGIVEN:
Five numbers 42, 24, 32, 64, 68
CONCEPT:
Concept of variance
FORMULA USED:
Mean = Sum/Total
Variance (σ2) = ∑δ2/n
CALCULATION:
Mean = (42 + 24 + 32 + 64 + 68)/5 = 230/5 = 46
∑δ2 = |42 - 46|2 + |24 - 46|2 + |32 - 46|2 + |64 - 46|2 + |68 - 46|2
⇒ 16 + 484 + 196 + 324 + 484
⇒ 1504
Variance (σ2) = ∑δ2/n
⇒ 1504/5
= 300.8
Last updated on May 29, 2025
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