The collection of emerald-cut diamonds contains replications, several diamonds at each weight. Had we fit the linear equation using average prices at each weight rather than individual diamonds, how would the fitted equation and summary measures r2and se) change?
The slope would be (increase significantly ,be approximately the same , ordecrease significantly)? and the intercept would (increasesignificantly,decrease significantly, orbe approximately the same)?. The value of se would (increase significantly,decrease significantly, orbe approximately the same)? and r2would (increase significantly,be approximately the same, or decrease significantly.)?