In a given set of scores, the following data were obtained, the highest score is 83, the median score is 75, 30% of the students got scores above 80, and the lowest quartile is 60. What is the 7th decile, the 50th percentile and the 1st quartile?

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.