Suppose that all the values in a data set are converted to z scores. Which of the statements below is true?

Mathematics

1 answer:

Lisa [10]3 years ago

6 0

Answer:

The mean of the z scores will be 0, and the standard deviation of the z scores will be 1.

Step-by-step explanation:

When the data is converted to z-scores the mean and standard deviation no longer stay the same. Both these quantities are transformed into news values.

Values converted to z scores follow a standard Normal curve. This curve is symmetric about the mean. The mean of standard normal curve is 0 with a standard deviation of 1.

Therefore, the correct answer is:

The mean of the z scores will be 0, and the standard deviation of the z scores will be 1.

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Read 2 more answers

Help! Which answer is correct?

Luda [366]

Well, since the graph starts at (0,50), making our y-intercept 50, we can knock off D as an option.

The next step is to find the slope. To do this, find two points and subtract the y values over the x values. (Just make sure that whichever y value you start with - start with the same x value).

So we have >>> (50, 200) and (0,50) from earlier.

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4 years ago

In the figure, angle D measures 45° and angle E measures 87°. What is the measurement of angle H? 42°

Vinvika [58]

The complete question is shown in the attached image

Answer:
measure angle H = 42°

Explanation:
There is a theorem that states that:
"In a triangle, the measure of the exterior angle is equal to the sum of the measures of the two non-adjacent angles to the exterior angle"

In the given, we have:
angle E is an exterior angle to triangle DFH
The two non-adjacent angles to angle E are angles D and H

Based on the above rule:
measure angle E = measure angle D + measure angle H

We are given that:
angle E = 87°
angle D = 45°

Substitute with the givens in the above rule and solve for the measure of angle H as follows:
angle E = angle D + angle H
87° = 45° + measure angle H
measure angle H = 87° - 45°
measure angle H = 42°

Hope this helps :)

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Lady_Fox [76]

Answer:

simplify

Step-by-step explanation:

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