For 1521, use Theorem 3.2.5 to determine whether the given matrix is invertible or not.1 23 51 23 62 31 412 36

Zscores and Percentiles Andrew Isbell Population zscore Z x Pop. Mean/ Standard deviations Sample zscore ZxSample Mean/ Standard deviations Zscores give an approximation of the averageness of a value compared to the population as a whole. Interpret Percentiles The kth percentile which means that the kth amount did less/worse...