SAT Math Prep

Front

What is the equation of a line with a negative slope that intersects the y-axis at 2?

Back

y = -x + 2

Front

What does it mean for a line to be an accurate line estimate of best fit?

Back

It means the line closely represents the trend of the data points in a scatter plot.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

What type of correlation is indicated by a downward sloping scatter plot?

Back

Negative correlation.

Front

If a data set has a median of 25 and a range of 40, how do you find the maximum value?

Back

Add the range to the median: 25 + 20 = 45.

Front

What is the definition of a median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

How do you determine if two ratios form a proportion?

Back

Cross-multiply the ratios and see if the products are equal.

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in the data set.

Front

What does a positive correlation in a scatter plot indicate?

Back

As one variable increases, the other variable also increases.

Front

What is the formula for the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1) for two points (x1, y1) and (x2, y2).