7. The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. The six distances are listed below. Find the sample VARIANCE and STANDARD DEVIATION for the given data. Round your final answer to one more decimal place than that used for the observations. Use BOTH the DEFINING Formula and the COMPUTING Formula to find the standard deviation and compare your answers for the 2 methods. 5. 12.7 24.5 t 40.4 +30.8 t 22.5 15.6 2. 3. 24.47 Mean 1니6.5

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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.