The mean of this dataset is calculated by summing all of the numbers you have and through diving them with the amount of numbers you have - so
18 + 15 + 22 + 18 + 25+ 19 + 23 = 140
140 / 7 = 20
Mean = 20
b. 6 - 10 inches is best for infants to see you best
I would simply phone or e-mail them or tell them directly about the error and say that according to my understanding (use the "I" statement) there appears to be a such and such error that needs to be corrected so that the text does not say give the wrong impression.
<span>There are 13 vitamins used by the body to maintain health. These are: vitamin A, vitamin C, vitamin D, vitamin E, vitamin K and vitamins B1, B2, B3, B5, B6, B7, B9 B12. Vitamins A, D, E and K are stored in fat, and the others are water soluable. As a result these vitamins must be regularly replaced.</span>
Foods that are high in calories but low in nutrients are said to contain empty - calories.