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Lets say you have 5 trials, and 5 output let's say {5, 43, 60, 30 , 4}...so how would u get the chi sqaure from here & the confidence interval. i haven't work on prob &statc in years, thanks a lot for help folks
Chi-square is a statistical test used to determine the degree of association between two categorical variables. It is used to analyze data that is in the form of frequency counts or proportions.
Chi-square is calculated by taking the sum of the squared differences between the observed and expected frequencies, divided by the expected frequency, for each category of the variables being analyzed.
A confidence interval is a range of values that is likely to contain the true population parameter with a certain level of confidence. It is used to estimate the unknown population parameter based on a sample of data.
The calculation of a confidence interval involves determining the margin of error, which is based on the sample size and the level of confidence desired. The margin of error is then added and subtracted from the sample mean to create the confidence interval.
There is no direct relationship between Chi-square and confidence interval. However, both are commonly used in statistical analysis to make inferences about population parameters based on sample data. Chi-square is used to analyze categorical data, while confidence intervals are used to estimate unknown population parameters.