Consider the subspaces W of R3 generated by the following vectors. Find the projection matrix for each subspace and use it to find the projection of the given vector y onto W. (a) W generated by (1, -1, 1) and (1, 1, -1). y = (-2, 1, 3). (b) W generated by (1, 0, 1) and (2, 1, O).y = (6, 0, 12).

Measures of Central Tendency Andrew Isbell Objectives 1.) Determine the mean of a variable from raw data 2.) Determine the median of a variable from raw data 3.) Determine the mode of a variable from raw data Arithmetic mean a mean computed by adding all values and dividing by the number of values added Population arithmetic mean computed using a known mean, this is usually an estimate Sample arithmetic mean computed using sample data, this is a statistic Finding a median in a data set: List numbers smallest to largest, then use the middle number If odd, add the middle two together and divide by two Sometimes it is better to use the mean than the median because the mean is resistant to unrealistic