​In a Stem-And-Leaf Display

question 5

Multiple Choice

​In a stem-and-leaf display,

• A) ​a single digit is used to define each stem, and a single digit is used to define each leaf.
• B) ​a single digit is used to define each stem, and one or more digits are used to define each leaf.
• C) ​one or more digits are used to define each stem, and a single digit is used to define each leaf.
• D) ​one or more digits are used to define each stem, and one or more digits are used to define each leaf.

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Definitions:

Regression Model

A form of predictive modelling technique which investigates the relationship between a dependent (target) and independent variable(s) (predictor).

Correlation Model

A statistical technique used to understand the strength and direction of the relationship between two variables.

Standard Error

The standard deviation of a point estimator.

Ith Residual

The difference between the observed value of the dependent variable and the value predicted using the estimated regression equation; for the ith observation the ith residual is yi − yˆi.