An ecologist examined 100 male mice and 100 female mice for signs of tick infestation. To test for an association between sex of the mouse and tick infestation at the 5% level of significance, the ecologist conducted a Chi-Squared analysis. The table below includes Observed and Expected (Expected is in parentheses) frequency data. Infestation total Ticks No ticks Sex Males 43 (41.0) 57 (59.0) 100 Females 39 (41.0) 61 (59.0) 100 Choose the 4 Chi-squared values that would result from these calculations (Hint* not the total Chi-square value, but the individual values). Chi-squared Ticks No ticks Males a b Females C d O a =0.05, b = 0.04, c = 0.05, d = 0.04 O a = 0.10, b 0.07, c = 0.10, d = 0,07

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.