When Data Are Collected Using a Quantitative,ratio Variable,what Is True

question 45

Multiple Choice

When data are collected using a quantitative,ratio variable,what is true about a frequency distribution that summarizes the data?

• A)Upper and lower class limits must be calculated.
• B)A pie chart can be used to summarize the data.
• C)The number of classes is equal to the number of variable values.
• D)The "5 to the k rule" can be applied.

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Definitions:

Efficient-Market Hypothesis

The theory that all existing information is already reflected in stock prices, thus making it impossible to consistently achieve higher returns than the overall market through stock selection or market timing.

Stock Prices

The cost or value of a share of a company's stock traded on the stock market.

Technicians

Analysts who use historical market data, charts, and statistical techniques to predict future market movements, focusing on patterns and prices.

Correlation Coefficient

A quantitative indicator that determines both the magnitude and orientation of a straight-line association between two variables represented on a scatter diagram.