To avoid mistakes, it is important to recognize when you have calculated an IMPOSSIBLE value for a metric, so that you can find and fix the error. Below are some metrics and their values. Check the box beside EACH of the metrics whose value given here is IMPOSSIBLE, if the metric is calculated correctly.

Customer Lifetime Value $=$$$-365.$

Penetration Share $=132\%$

Margin Multiple $=-3\mathrm{.}1$

Weighted Contribution Margin $=$$ $-3\mathrm{.}55$

Price Elasticity of Demand $=-3\mathrm{.}5$

Frequency $=0\mathrm{.}8$