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seropon [69]
3 years ago
14

A researcher obtained the average SAT scores of all students in each of the50 states, and the average teacher salaries in each o

f the 50 states. Shefound a negative correlation between these variables. The researcherconcluded that a lurking variable must be present. By lurking variable shemeansa variable that is not among the variables studied, but that affects theresponse variablethe true cause of a response any variable that produces a large residual the true variable, which is explained by the explanatory variable
Mathematics
1 answer:
FromTheMoon [43]3 years ago
7 0

Answer:

By lurking variable she means a variable that is not among the variables studied but which affects the response variable.

Step-by-step explanation:

A lurking variable is a variable that is not included as an explanatory variable in the analysis, but can affect the interpretation of relationships between variables.

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mean add upp all the numbers and divide by how many they are

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Setler79 [48]

Answer:

x = -4/5 and x = 1

Step-by-step explanation:

5x^2 - x - 4 = 0

Factor out x from the expression.

x (5x +4) - 5x -4 = 0

Factor out the negative sign from the expression.

x (5x + 4) - (5x+4) = 0

Factor out 5x + 4 from the expression.

(5x +4) x (x-1) = 0

When the product of factors equal 0, that means atleast one factor is 0.

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Solve the equation for x.

5x + 4 = 0

Minus 4 from both sides.

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Divide by 5.

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Solve the equation for x.

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Add one to both sides.

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Therefore, x = -4/5 and x = 1.

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3 years ago
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4 years ago
Round 8.85 to the nearest hundredths.
geniusboy [140]

Answer: 8.85 rounded to the nearest hundredths place is 8.85

Step-by-step explanation:

The hundredths place is at 0.0x <--(where the x is).

So rounding from the thousandths to the hundredths is 8.850 = 8.85

Simply put, 8.85 is rounded to the nearest hundredths itself already.

Rounding to the nearest <em>10th </em>place however, would give you 8.9.

Hope this helps!

6 0
3 years ago
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