What is Confidence Interval?<br><br>The translation is the "confidence range". What is your confidence in the period?<br><br>Go back to the statistical deduce that we've referred to in the P-value story. We have made a research study on a small population that we select, called the Sample, and then find the average in the group (estimate) in order to deduce this value into a population with a fixed value of one (parameter) that we do not know what it is. We use the main inference<br><br>At that time, we think of the average value, and then remove P-value to say that such a value (or such event) is caused by an accident. If it is not likely to happen by chance, we can tell you that there is evidence that the principal or Null assumption hypothesis that the set is not likely to be true.<br><br>The Confidence interval is another form we use to offer statistical deducers as well, but instead we offer just one value. We have chosen to present as a range now. The number ranges from the bottom edge to the upper edge. There is a value in the middle of one (think like an SD or a deviation).<br><br>How do we set a range of confidence? What does it mean?<br><br>Many people like to say that 95% confidence interval is "we assure 95% that the constant value in the population or parameter is in this range."<br><br>This word might seem to be true, but it's not right. The reason for that is, because the constants or the parameters in the population, it is already not what we create. We do not know yet, we have created a Confidence interval frame, and then expect to cross this constant. The mosquito can not fly to fly at this place, but we hand-shaking. A blurry eye is a misalignment. It's never been so bad because the constants exist only one value.<br><br>Therefore, 95% Confidence interval means that there are 95% chance at the belief range, it will cover the actual constant value. This is the<br><br>Or, in the picture of a glass cover, 100 times the mosquito can be captured 95 times, can you see a picture? 1,000 times the confidence interval covers actual constants in the population 950 times.<br><br>Do not forget that we are creating "confidence value", we do not create "constant", so we are interested in the chance that "sentiment" is going to cover "constant".<br><br>What is the time to take it?<br><br>Imagine if we set the main assumptions For example, the weight of Thai 1,000 people = Average Thai population weight (parameter).<br><br>We do not know what the parameter is, the more we will estimate using inferential statistic that we are going to start.<br><br>Assume constants (that we don't know) = 60 kg<br><br>Each time we randomly experiment. We may get a swing to the swing. 61 58 Each of the values has a range of confidence interval, spreading the wings 61-71 70 to the majority, covering 60 kg. It 95 has been done for 100 times, this is the main assumption that is set to be true.<br><br>As many times as possible around the range of 60 and cover the actual values.<br><br>However, when the confidence interval is not covered, the actual value Indicates that the data or evidence of the primary assumptions conflicts occurred. Allows us to reject null hypothesis and p-value values are usually less than 0.05.<br><br>The width of the Confidence interval depends on 2 main factors: Population variation and Sample size.<br><br>If the variation in population-> CI is narrow if variation in population much-> CI wide If sample size is less-> CI wide if sample size-> CI narrow
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