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प्रश्न
lf for a distribution `sum_1^n f_i x_i = 132 + 5p, sum_1^n f_i = 20` and mean of the distribution is 8.1, then the value of p is ______.
पर्याय
3
6
4
5
MCQ
रिकाम्या जागा भरा
उत्तर
lf for a distribution `sum_1^n f_i x_i = 132 + 5p, sum_1^n f_i = 20` and mean of the distribution is 8.1, then the value of p is 6.
Explanation:
Given, `sum_1^n f_i x_i = 132 + 5p, sum_1^n f_i = 20` and mean of the distribution is 8.1.
We know that,
Mean, `barx =(sumf_ix_i)/(sumf_i)`
∴ 8.1 = `(132 + 5p)/20`
∴ 132 + 5p = 162.0
∴ 5p = 30
∴ p = 6
Hence, the value of p is 6.
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