Write an algorithm that outlines how to calculate the room area for the image below

Advanced Placement (AP)

1 answer:

Mashutka [201]3 years ago

7 0

Looking right now commenting on bottom

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Do I equal each equation or equal it to 180

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Equal both equations to 180.

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A teacher collected information from a class of 25 students about the time, in hours, they spent studying the previous week and

djverab [1.8K]

Answer:

B. −0.72

Explanation:

The correlation coefficient is a measure of the linear association between two variables.

It is a dimensionless value bettween - 1 and +1. Hence, it does not depend on the units that are used to measure the data.

You can see the formula to calculate the correlation coefficient in the attached picture.

There you see that the numerator containts the sum of the differences of the values of the x-variable with its the mean, multiplied by the sum of the differences of the values of the y variable with its mean, while the denominator contains the square root of the product of the squares of the same differences, thus the units are canceled.

In conclusion, If the teacher changes the units of each variable from hours to minutes, the value of the correlation coefficient between minutes studying and minutes spent on the Internet will not change; it will continue being −0.72.

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