Reading 2: Organizing, Visualizing, and Describing Data

Which of the following best describes discrete numerical data?

A dataset contains the daily closing prices of a specific stock over the past year. This is best classified as:

In a frequency distribution, the relative frequency of an interval is calculated as:

A contingency table is primarily used to analyze:

Which visualization tool is most appropriate for identifying whether a nonlinear relationship exists between two numerical variables?

The sum of the deviations of observations from their arithmetic mean is always:

Calculate the weighted mean return of a portfolio consisting of 60 percent Asset A (return 10 percent) and 40 percent Asset B (return 5 percent).

Which measure of central tendency is least affected by outliers?

Calculate the geometric mean return for three years with returns of 10 percent, 20 percent, and -10 percent.

An investor purchases 1,000 USD of stock each month. The share prices paid were 10, 15, and 20. The average cost per share is best calculated using the:

If a distribution is positively skewed, the relationship between the mean, median, and mode is typically:

The third quartile (Q3) of a dataset represents the value below which what percentage of observations lie?

What is the Mean Absolute Deviation (MAD) of the returns 2 percent, 5 percent, and -1 percent?

The sample variance is calculated using a denominator of:

Calculate the coefficient of variation (CV) for a stock with a mean return of 8 percent and a standard deviation of 12 percent.

A distribution with excess kurtosis of 2.0 is best described as:

The correlation coefficient between two variables ranges from:

Which chart type is best for displaying the joint frequency of two categorical variables?

If the harmonic mean, geometric mean, and arithmetic mean are calculated for a dataset with variable positive values, which inequality is correct?

A winsorized mean is calculated by:

Unstructured data is best described as:

For a dataset with 9 observations, the position of the 3rd quartile is calculated using the formula (n+1)y/100. What is the position?

A box and whisker plot specifically highlights which measure of dispersion?

Calculate the sample variance for a dataset: 2, 4, 6. (Mean is 4).

Target downside deviation differs from standard deviation because it:

Which word cloud feature indicates the frequency of a word in a text dataset?

Ordinal data allows for which of the following operations?

A confusion matrix is a type of:

Which chart is best suited for comparing categories by size where area represents value?

The harmonic mean of 2 and 8 is:

In a unimodal distribution, if the Mode < Median < Mean, the distribution is:

Spurious correlation refers to:

What is the joint frequency of 'Monday' and 'Front Street' if the marginal frequency for Monday is 19 and Front Street is 25, given the cell value is 7?

A histogram is essentially a bar chart of:

If the standard deviation of a dataset is 5 and the mean is 20, the coefficient of variation is:

Excess kurtosis is calculated as:

Which measure is calculated as the sum of squared deviations from the mean divided by (n-1)?

Given returns of 10 percent, 10 percent, 40 percent, 10 percent. Which principle allows us to sum the present values of these cash flows?

A bubble line chart adds a third dimension to a line chart by modifying the:

Which of the following is true for a normal distribution?

If covariance is 0.0058, standard deviation of A is 0.0529, and standard deviation of B is 0.1114, what is the correlation coefficient?

Panel data typically combines which two data types?

In a box and whisker plot, the vertical line within the box represents the:

To calculate a compound annual rate of return over three years, one should use the:

Which of the following is true regarding the arithmetic mean and geometric mean for variable data?

Covariance measures:

A heat map uses which visual element to display data frequency?

Which of the following is NOT a property of the arithmetic mean?

To construct a frequency polygon, one plots points using:

Given a sample of returns: 30 percent, 12 percent, 25 percent, 20 percent, 23 percent. What is the median?