You decide to implement a new customer loyalty program that rewards customers for shopping in your store. To accomplish this, you need to implement a data warehouse to collect data from all your physical and online stores. This is an example of .

Hypothesis: volumes of both figures are equal.the volume of  figure 1 is: .the volume of figure 2 is: .since , you can conclude that and . so, .volumes of figures are equal only when an angle in the basis is right (then figures will be the same), in another cases volume of figure 1 is less than volume of figure 2.the hypothesis was not correct in all cases.

That display data that change over time