Which of the Following Is the LEAST Accurate Way to Determine

question 13

Multiple Choice

Which of the following is the LEAST accurate way to determine heart rate?

• A)Count the number of large squares between two R waves and divide that into 300.
• B)Use a rate meter.
• C)Count the number of QRS complexes in a 6- sec.strip and multiply by 10.
• D)Count the number of small squares between two R waves and divide that into 1500.

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Definitions:

Covariance Value

A measure indicating the extent to which two random variables change together, where a positive value implies direct correlation, and a negative value an inverse correlation.

Least Squares Regression

A statistical method used to determine the line of best fit by minimizing the sum of squares of the differences between observed values and the values predicted by the model.

Correlation Coefficient

A numerical measure that quantifies the degree of correlation or linear relationship between two variables, ranging from -1 to 1.

Correlation Coefficient

A numerical measure that indicates the extent to which two variables fluctuate together. A value closer to 1 or -1 indicates a strong relationship.