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60363

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Race is an example of categorical data

Select the correct answer(s).

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If sample data undergoes 10% trimming, the total number of scores in the sample (N) stays the same.

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If sample data undergoes Winsorized trimming, the median stays the same.

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A normal distribution has both a positive skew and a negative skew

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60367

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When plotting a population distribution, frequency is plotted along the y-axis.

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60368

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A normal distribution can have a mean and standard deviation of anything?

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60370

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A standard normal distribution has a mean of 1 and a standard deviation of 0

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60371

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A symbolic notation s2 represents the population variance

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Explanation

The population variance is Q2

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A z-score of -0.1 is one standard deviation below the mean.

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An experiment is measuring how long it takes a pigeon to peck on a red button. This is an example of a ________ measurement scale.

Select the correct answer(s).

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60374

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An experiment compares I.Q. Scores for 8-year-olds and 12-year-olds. In this case, age represents:

Select the correct answer(s).

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60375

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A z-score of +0.68 is in the ______ percentile (round off to one decimal place).

Fill in the blanks

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60377

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An experiment measures college GPAs based on a student's socioeconomic status (crudely defined as poor, middle-class and rich) and gender (male and female). Which of the following is correct?

Select the correct answer(s).

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60378

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Stats

Question 1 of 1

Time Left

Race is an example of categorical data

Select the correct answer(s).

(0/0)

If sample data undergoes 10% trimming, the total number of scores in the sample (N) stays the same.

Select the correct answer(s).

(0/0)

If sample data undergoes Winsorized trimming, the median stays the same.

Select the correct answer(s).

(0/0)

A normal distribution has both a positive skew and a negative skew

Select the correct answer(s).

(0/0)

When plotting a population distribution, frequency is plotted along the y-axis.

Select the correct answer(s).

(0/0)

A normal distribution can have a mean and standard deviation of anything?

Select the correct answer(s).

(0/0)

A standard normal distribution has a mean of 1 and a standard deviation of 0

Select the correct answer(s).

(0/0)

A symbolic notation s2 represents the population variance

Select the correct answer(s).

(0/0)

Explanation

A z-score of -0.1 is one standard deviation below the mean.

Select the correct answer(s).

(0/0)

An experiment is measuring how long it takes a pigeon to peck on a red button. This is an example of a ________ measurement scale.

Select the correct answer(s).

(0/0)

An experiment compares I.Q. Scores for 8-year-olds and 12-year-olds. In this case, age represents:

Select the correct answer(s).

(0/0)

A z-score of +0.68 is in the ______ percentile (round off to one decimal place).

Fill in the blanks

(0/0)

An experiment measures college GPAs based on a student's socioeconomic status (crudely defined as poor, middle-class and rich) and gender (male and female). Which of the following is correct?

Select the correct answer(s).

(0/0)

A z-score or -1.04 is in the __________ percentile (round off to one decimal place).

Fill in the blanks

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What z-score has approximately 68% of the scores below it?

Fill in the blanks

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