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keisanHigh-precision calculations for everyday life and work
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Viewing Rating Margin of Error

TOP/Collection of Applied Calculation Problems/Probability and Statistics
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The viewership rating for all households is statistically estimated based on the viewership ratings of sample households.
Sample size
Households
Viewership Rating
%
[Confidence Level%]
True Viewership Rating ~ Percentage range
Confidence level refers to the probability that the true value lies within the range of the estimated values.
The range of estimated values narrows as the confidence level decreases or the sample size increases.

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