SAT Math Prep

What is the difference between a population and a sample?

• A population includes all members of a defined group, while a sample is a subset of the population used for analysis.

• A population is always smaller than a sample.

• A sample includes all members of a defined group, while a population is a subset of the sample.

• A population is a random selection of individuals, while a sample is a fixed group of individuals.

How do you find the sum of three consecutive even numbers?

• 3x + 6

• 2x + 4

• x + 6

• x + 2

What is the slope-intercept form of a linear equation?

• y = mx + b, where m is the slope and b is the y-intercept.

• y = ax^2 + bx + c, a quadratic equation.

• y = mx + c, where m is the slope and c is the y-intercept.

• y = b/x + m, an inverse relationship.

What is relative frequency?

• The total number of trials conducted in an experiment.

• The ratio of the number of times an event occurs to the total number of trials or observations.

• The average of all outcomes in a probability experiment.

• The difference between the highest and lowest values in a data set.

How do you interpret the slope of a line?

• The slope indicates the rate of change of y with respect to x; a positive slope means y increases as x increases.

• The slope represents the total distance covered by the line.

• The slope is the angle at which the line intersects the x-axis.

• The slope indicates the maximum value of y for a given x.

How do you determine if a line is a good fit for data?

• Check how closely the data points cluster around the line; a good fit will have points evenly distributed around the line.

• Look for the line that passes through the maximum number of data points, regardless of their distribution.

• Select the line that has the steepest slope, as it indicates a stronger relationship.

• Choose the line that intersects the y-axis at the highest point, as it shows the best fit.

If the sum of three consecutive even numbers is 90, how do you find the largest number?

• Set up the equation 3x + 6 = 90. Solve for x to find the first number, then add 4 to find the largest.

• Add 30 to the first number to find the largest.

• Multiply the first number by 3 to find the largest.

• Set up the equation 2x + 6 = 90. Solve for x to find the largest.

How do you calculate relative frequency from a table?

• Multiply the frequency of the specific category by the total frequency of all categories.

• Add the frequency of the specific category to the total frequency of all categories.

• Divide the frequency of the specific category by the total frequency of all categories.

• Subtract the frequency of the specific category from the total frequency of all categories.

How do you determine the equation of a line from a graph?

• Identify two points on the line, calculate the slope (rise/run), and use one point to find the y-intercept.

• Draw a horizontal line through the graph and find the x-intercept.

• Use the midpoint of the line and calculate the average of the x and y coordinates.

• Estimate the slope by measuring the distance between the endpoints of the graph.

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

• It represents the slope of the line.

• It is the point where the line crosses the x-axis.

• It is the point where the line crosses the y-axis, representing the value of y when x is zero.

• It indicates the maximum value of y in the equation.