8th PBA Test #4 Practice

Front

What is the formula to calculate average speed?

Back

Average Speed = Total Distance / Total Time

Front

How do you calculate the mean of a set of numbers?

Back

Mean = (Sum of all values) / (Number of values)

Front

What is the median in a set of numbers?

Back

The median is the middle value when the numbers are arranged in order.

Front

How do you find the slope of a line given two points?

Back

Slope (m) = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are the points.

Front

What does the equation y = mx + b represent?

Back

It represents the slope-intercept form of a linear equation, where m is the slope and b is the y-intercept.

Front

What is the definition of a linear relationship?

Back

A linear relationship is a relationship that can be graphically represented as a straight line.

Front

How do you determine the y-intercept from an equation?

Back

The y-intercept is the value of y when x = 0 in the equation.

Front

What is the difference between mean and median?

Back

Mean is the average of all values, while median is the middle value in a sorted list.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative sizes of two or more values.

Front

How do you express a slope as a simplified ratio?

Back

By reducing the fraction formed by the change in y over the change in x.