A mathematics department has been experimenting with four different delivery methods for content in their Algebra courses. One method is the traditional lecture (method I), the second is a hybrid format with half the class time online and the other half face-to-face (method II), the third is online (method II), and the fourth is a model from which students obtain their lectures and do their work in a lab with an instructor available for assistance (method IV). To assess the effectiveness of the four methods, students in each approach are given a final exam with the results shown in the accompanying table. Do the data suggest that any method has a different mean score from the others? Method 1 Method 2 Method 3 Method 4 81 89 83 87 77 55 61 95 88 83 69 85 64 79 73 60 85 61 66 84 71 40 78 70 70 60 63 59 60 91

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Power Operation

Power operation is topic of algebra in Math. It is use to represent repeated multiplication. Very big number and very small number can be easily express using power operation. Power operation is useful in many fields. In space engineering, it helps in representing the distance or size of particular heavenly body. In medical field, it is used to represent very small size. In medical field it helps to mention size of bacteria or virus. 

Exponents

The exponent or power or index of a variable/number is the number of times that variable/number is multiplied by itself.