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Question
The ages of students in a class have been put into the frequency distribution below.| Age | Number of Students |
| 18 | 3 |
| 19 | 5 |
| 20 | 28 |
| 21 | 4 |
What is the average age of these students?
a) 19.50
b) 19.83
c) 20.00
d) 22.00
e) 23.00
Answer
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Related questions
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Q:
Annie Mikhail, market analyst for a national company specializing in historic city tours, is analyzing the relationship between the sales revenue from historic city tours and the size of the city. She gathers data from six cities in which the tours are offered. Annie's dependent variable is annual sales revenues and her independent variable is the city population. Regression analysis of the data yielded the following tables. Coefficients
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0.224675
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Q:
Annie Mikhail, market analyst for a national company specializing in historic city tours, is analyzing the relationship between the sales revenue from historic city tours and the size of the city. She gathers data from six cities in which the tours are offered. Annie's dependent variable is annual sales revenues and her independent variable is the city population. Regression analysis of the data yielded the following tables. Coefficients
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0.224675
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The proportion of variability of the dependent variable accounted for or explained by the independent variable is called the _______.
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The numerical value of the coefficient of determination must be _______.
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A standard deviation of the error of the regression model is called the _______.
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