Confidence Interval Calculator
We need to standardize his score (i.e. calculate a z-score corresponding to his actual test score) and use a z-table to determine how well he did on the test relative to his peers. In order to
that z-score will be -.385 rounded to 3 decimal places. that will be the low z-score. the high z-score will be +.385 rounded to 3 decimal places. you can use the online z-score calculator at
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Lower fence = Q1 - k * IRQ. Upper fence formula Upper fence = Q3 + k * IRQ. Z-score The data should be symmetrical, and if the data's distribution is normal you may estimate the number of
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