An Experiment Was Performed on a Certain Metal to Determine

question 147

Multiple Choice

An experiment was performed on a certain metal to determine if the strength is a function of heating time.Results based on 10 metal sheets are given below.Use the simple linear regression model. = 30 = 104 = 40 = 178 = 134 Calculate the correlation coefficient.

• A).778
• B).252
• C)1.000
• D).882

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Definitions:

Exponent

A mathematical notation indicating the number of times a number is multiplied by itself.

Polynomials

An algebraic expression composed of variables and coefficients, structured as the sum of terms, where each term includes a variable raised to a non-negative integer power.

Vertical Format

A way of presenting information or data in columns that run up and down on a page or screen.

Special Product Pattern

Patterns that emerge from multiplying polynomials in certain ways, making multiplication easier.