x | 5 | 10 | p | 20 | 25 |
f | 10 | 10 | 10 | 2 | 8 |
A) 15
B) 150
C) 10
D) None of these
Correct Answer: A
Solution :
\[{{\mathbf{x}}_{\mathbf{1}}}\] | \[{{\mathbf{f}}_{\mathbf{1}}}\] | \[{{\mathbf{f}}_{\mathbf{1}}}\mathbf{\times }{{\mathbf{x}}_{\mathbf{1}}}\] |
5 | 10 | 50 |
10 | 10 | 100 |
p | 10 | 10p |
20 | 10 | 40 |
25 | 2 | 200 |
\[\sum {{f}_{1}}=40\] | \[\sum {{f}_{1}}{{x}_{1}}=10p+390\] |
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