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Thank you We sneak And his you're shmoop du jour

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brought to you by regression You know that feeling you

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get when your mathematical skills suddenly go from i'm pretty

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sure tio if i'm completing a regression analysis you find

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that the least squares regression line is why equals one

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point three Acts plus 32 The output of the analysis

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states that the standard bearer of the coefficient is point

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six three Well knowing this what is the ninety eight

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percent confidence interval for the slope And here the potential

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answers One day you may find yourself running your own

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business looking down at the rest of us from the

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windows of your fifty fourth floor corner office you'll find

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it advantageous to have your staff of accountants use regression

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analysis to identify the factors responsible for your corporation's profits

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Okay so that might be twenty thirty years away but

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well there's no time like the present now that we

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have the least squares regression line and we know the

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standard air of the coefficient is point six three we

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can easily calculate the ninety eight percent confidence interval for

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the slope Well they are absolutely correct We need a

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sample size and we don't have one without that vital

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info We can't calculate the t value because we need

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to know the degrees of freedom You know statistics are

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stubborn that way so you can attempt to make any

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of the answers a through d work but you're going

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to experience an epic fail The answer is e it

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can't be determined that's the right answer in the world

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of statistical inference numbers air like ants they need each 00:01:38.491 --> [endTime] other to solve problems especially on a slope

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