1. An experiment was run and the following data table was produced: Input Response 2.5 3 4 4.5 (a) Calculate the correlation coefficient for the data. Is the data positively or negatively correlated, and is that correlation weak, moderate, or strong? (b) Find the equation of the least squares regression line and plot the line on top of a scatterplot of the data.

Q: sorry can you write it out in pen or pencil please

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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.