Can an empty set be a universal set?

The empty set is defined as the complement of the universal set. That means where Universal set consists of a set of all elements, the empty set contains no elements of the subsets. The empty set is also called a Null set and is denoted by '{}'.

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The empty set is defined as the complement of the universal set. That means where Universal set consists of a set of all elements.

Mean= 307

Mean absolute deviation = 42

Step-by-step explanation:

Given chart shows the calories of several sandwiches at a restaurant.( 242, 280, 290,290,350,390).

Now we need to find the mean and mean absolute deviation of this set of data, and then describe what the mean absolute deviation represents.

To find mean, we just need to add the given numbers and divide by total numbers.

Hence Mean= 307

Look at the attached table for calculation

To find deviation, we just find difference between given data values and Mean (307)

To find mean absolute deviation, we again take mean of deviation values as shown in table.

Hence mean absolute deviation = 42

Mean absolute deviation (42) means average distance between each data point and the mean is 42.