the data show the number of games played each year by sammy. determine if the data are approximately normally distributed.
81, 148, 152, 135, 151, 152, 159, 142,34,162, 130, 162,163,143,67,112,70
Did you construct a histogram?
Here is a one. Does that look normally distributed to you?
In mathematics, you don't understand things. You just get used to them.
I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.