1) Team A won 60% of their last 50 games whereas Team B won 75% of their last 50 games. The margin of error for Team A's winning % is higher than the marginal of error for Team B's winning %. 2) The linear regression coefficients are chosen to minimize the sum of residuals. 3) The possible outcomes of an at-bat are single (S), double (D), triple (T), home run (HR), and no hit (NH). A variable keeping track of the at-bat outcomes would be best described as ordinal. 4) Standard Deviation is a unitless measure and can be represented as a percentage