5/27/22 - Algebra I Regents Review Flashcard

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of statistical dispersion, calculated as the difference between the third quartile (Q3) and the first quartile (Q1). It represents the range of the middle 50% of the data.

Front

Which correlation coefficient indicates the strongest linear relationship between the variables?

Back

The correlation coefficient ranges from -1 to 1. A coefficient of -0.84 indicates a strong negative linear relationship between the variables.

Front

What does the expression (2⁸)² simplify to?

Back

(2⁸)² simplifies to 2¹⁶ using the power of a power property, which states that (a^m)^n = a^(m*n).

Front

What is the minimum value in a data set?

Back

The minimum value is the smallest number in a data set. For example, in the set {58, 60, 64, 66}, the minimum value is 58.

Front

Define correlation coefficient.

Back

The correlation coefficient is a statistical measure that describes the strength and direction of a relationship between two variables.

Front

What is the formula for calculating the interquartile range (IQR)?

Back

IQR = Q3 - Q1, where Q3 is the third quartile and Q1 is the first quartile.

Front

Explain what a negative correlation coefficient indicates.

Back

A negative correlation coefficient indicates that as one variable increases, the other variable tends to decrease.

Front

What is the significance of a correlation coefficient of 0?

Back

A correlation coefficient of 0 indicates no linear relationship between the two variables.

Front

How do you find the first quartile (Q1) in a data set?

Back

To find Q1, arrange the data in ascending order and find the median of the lower half of the data.

Front

What is the power of a power property in exponents?

Back

The power of a power property states that (a^m)^n = a^(m*n).