Mid-Term Review

Front

What is a polynomial?

Back

A polynomial is a mathematical expression that consists of variables, coefficients, and non-negative integer exponents. For example, 2x^2 + 3x - 5 is a polynomial.

Front

What is the degree of a polynomial?

Back

The degree of a polynomial is the highest power of the variable in the expression. For example, in the polynomial 4x^3 + 2x^2 - x, the degree is 3.

Front

How do you find the midpoint of a line segment?

Back

The midpoint M of a line segment with endpoints A(x1, y1) and B(x2, y2) is given by M = ((x1 + x2)/2, (y1 + y2)/2).

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter P of a rectangle is given by P = 2(length + width).

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of variability that represents the range of the middle 50% of a data set, calculated as Q3 - Q1.

Front

What is the difference between mean and median?

Back

The mean is the average of a data set, while the median is the middle value when the data set is ordered. The median is less affected by outliers.

Front

What does undefined slope mean?

Back

An undefined slope occurs in a vertical line where the change in x is zero, making the slope calculation (rise/run) impossible.

Front

What is a dot plot?

Back

A dot plot is a statistical chart that uses dots to represent the frequency of data points in a dataset, allowing for easy visualization of distribution.

Front

How do you determine which measure of center to use?

Back

The choice of measure of center (mean, median) depends on the data distribution. Use the median for skewed distributions and the mean for symmetric distributions.

Front

What is a linear equation?

Back

A linear equation is an equation that makes a straight line when graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.