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Elodia [21]
3 years ago
15

of the following, which is not true of r? The value r does not depend on the units of y and x, r is always between 0 and 1, r me

asures the strength of the linear relation between x and y, the value of r does not depend on which of two variables is labeled x, |r| is less than 1.0 unless the points on a scatterplot line up exactly​
Mathematics
1 answer:
saveliy_v [14]3 years ago
6 0

Answer:

  r is always between 0 and 1

Step-by-step explanation:

The untrue statement is ...

  r is always between 0 and 1

One way you can tell is that it is inconsistent with the true statement |r| ≤ 1.

_____

<em>Comment on correlation coefficient</em>

The correlation coefficient (r) is the ratio of the covariance of x and y to the product of the standard deviations of x and y. This formula is symmetrical in x and y, so it doesn't matter which data set you call x and which one you call y. Similarly, the units cancel, so r is a unitless number, and the units of x and y don't matter, either.

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A number line is shown. Which expression represents the distance between two points, X and Y, on the number line?
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Answer: C. |-4 - 3|

<u>Step-by-step explanation:</u>

x = -4

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The distance between them is the difference. The mathematical operation for difference is subtraction.

Distance is a unit of measurement. Measurements cannot be negative so the absolute value sign is used to ensure the difference is positive.

4 0
3 years ago
Hypothesis testing on samples with fewer than 30 participants can be carried out by using the t-value for the corresponding leve
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Step-by-step explanation:

Z-tests are statistical calculations that can be used to compare the population mean to a sample mean The z-score is used to tellsbhow far in standard deviations a data point is from the mean of the data set. z-test compares a sample to a defined population and is typically used for dealing with problems relating to large samples (n > 30). Z-tests can also be used to test a hypothesis. Z-test is most useful when the standard deviation is known.

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3 0
3 years ago
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Please help links = reported i need help
34kurt

Answer:

not helping you i will take the points tho.

Step-by-step explanation:

thanks for the points im taking them back now c: this is what you get for messing with me

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