Delete all columns that are not predictors as per the instructions above. $[1]$

$2.$ Which predictor$($s$)$ have more than $10\%$ missing data? Delete these columns. $[2]$

$3.$ Which counties have missing data? Delete these rows. $[2]$

$4.$ Find the mean and standard deviation of each predictor. Standardize the predictor data but not the

response data. Use the standardized data for future problems.