SAT Math Prep

Front

What is the purpose of a scatterplot in statistics?

Back

A scatterplot is used to visualize the relationship between two quantitative variables, showing how one variable may change in relation to another.

Front

What does the line of best fit represent in a scatterplot?

Back

The line of best fit represents the trend of the data points in a scatterplot, indicating the predicted values of one variable based on the values of another.

Front

How do you determine the number of data points that deviate from a predicted value in a scatterplot?

Back

Count the number of data points whose actual values differ from the predicted values (from the line of best fit) by a specified amount, such as more than 3 centimeters.

Front

What is the recommended daily calcium intake for a 20-year-old?

Back

The recommended daily calcium intake for a 20-year-old is 1,000 milligrams (mg).

Front

How can you represent a real-world scenario using inequalities?

Back

You can represent a real-world scenario using inequalities by defining variables for the quantities involved and creating an inequality that reflects the conditions of the scenario.

Front

What is the formula to calculate the total charge for a hotel stay including tax?

Back

The total charge can be calculated using the formula: Total Charge = (Room Rate * Number of Nights * (1 + Tax Rate)) + Additional Fees.

Front

What does the slope of a line in a scatterplot indicate?

Back

The slope of a line in a scatterplot indicates the rate of change of the dependent variable with respect to the independent variable.

Front

How do you calculate the probability of an event?

Back

The probability of an event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

If Lisa has a probability of choosing a red dress of 25%, how can you express this in terms of the number of dresses?

Back

If Lisa has 2 red dresses and a total of 8 dresses (2 red + 3 green + x blue), the probability is 2/8 = 25%, which means she has 3 blue dresses.

Front

What is the significance of the intercept in a linear equation?

Back

The intercept in a linear equation represents the value of the dependent variable when the independent variable is zero.