NYS Math 8 2016 Released Questions

Front

What is correlation in statistics?

Back

Correlation measures the strength and direction of a linear relationship between two variables.

Front

What are the types of correlation?

Back

1. Positive correlation: as one variable increases, the other also increases. 2. Negative correlation: as one variable increases, the other decreases. 3. No correlation: no relationship between the variables.

Front

What is a linear equation?

Back

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise over run).

Front

What does the y-intercept represent in a linear equation?

Back

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a figure but not its shape, by a scale factor.

Front

What is the difference between rotation and reflection in geometry?

Back

Rotation turns a figure around a fixed point, while reflection flips a figure over a line, creating a mirror image.

Front

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

Back

Use the slope formula to find the slope, then use the point-slope form of the equation to write the line's equation.

Front

What is the formula for calculating the slope between two points (x1, y1) and (x2, y2)?

Back

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables using dots to represent data points.