Quiz F1B2C05 Sample Moments

Question 1 of 10

1. Question

1 point(s)

Category: F1B2 Quantitative Analysis

Which measure of central tendency is least affected by extreme values?

Mean
Median
Mode
Standard deviation

Question 2 of 10

2. Question

1 point(s)

Category: F1B2 Quantitative Analysis

A positively skewed distribution has:

The mean greater than the median
The mean less than the median
The mean equal to the median
No relationship between the mean and median

Question 3 of 10

3. Question

1 point(s)

Category: F1B2 Quantitative Analysis

Which measure indicates the “peakedness” or “flatness” of a distribution?

Skewness
Kurtosis
Mean
Standard deviation

Question 4 of 10

4. Question

1 point(s)

Category: F1B2 Quantitative Analysis

In a dataset, if the mode occurs more than once, the distribution is:

Bimodal
Unimodal
Multimodal
Uniform

Question 5 of 10

5. Question

1 point(s)

Category: F1B2 Quantitative Analysis

How can sample moments be used to assess whether a dataset is normally distributed?

By calculating skewness and kurtosis values and comparing them to expected values for normal distributions.
By calculating quartiles and comparing them to expected values for normal distributions.
By calculating the range and comparing it to expected values for normal distributions.
By calculating the mean and median and comparing them to expected values for normal distributions.

Question 6 of 10

6. Question

1 point(s)

Category: F1B2 Quantitative Analysis

Which moment is used to estimate the population mean?

First moment
Second moment
Third moment
Fourth moment

Question 7 of 10

7. Question

1 point(s)

Category: F1B2 Quantitative Analysis

What does a standard deviation of zero indicate about a dataset?

The dataset has no variability
The dataset has a high degree of variability
The dataset has a moderate degree of variability
The dataset has an unknown degree of variability

Question 8 of 10

8. Question

1 point(s)

Category: F1B2 Quantitative Analysis

1. What is the purpose of sample moments in statistics?

To estimate population parameters
To calculate the standard deviation of a sample
To determine the median of a sample
To identify outliers in a dataset

Question 9 of 10

9. Question

1 point(s)

Category: F1B2 Quantitative Analysis

What does skewness measure in a dataset?

The degree of symmetry in the distribution
The spread or variability of the data
The presence of outliers in the data
The degree to which the distribution deviates from normality

Question 10 of 10

10. Question

1 point(s)

Category: F1B2 Quantitative Analysis

Which type of kurtosis indicates that a dataset has more extreme values than would be expected under normal conditions?

Leptokurtic
Mesokurtic
Platykurtic
None of the above

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