2023 Most Missed TX TEKS 5A3G3D4A (Q4-30-43-6)

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line. It can be expressed in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What does correlation mean in statistics?

Back

Correlation measures the strength and direction of a linear relationship between two variables. It is quantified by the correlation coefficient (r), which ranges from -1 to 1.

Front

What does a correlation coefficient of r ≈ -0.09 indicate?

Back

A correlation coefficient of r ≈ -0.09 indicates a weak negative correlation, meaning there is little to no linear relationship between the two variables.

Front

How do you calculate the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width (Area = length × width).

Front

How do you calculate the area of a triangle?

Back

The area of a triangle is calculated using the formula Area = 1/2 × base × height.

Front

If the area of a rectangle is equal to the area of a triangle, what does that imply?

Back

It implies that the mathematical expressions for the areas of both shapes can be set equal to each other to solve for unknown variables.

Front

What is the significance of solving for x in an equation?

Back

Solving for x helps to find the value of the variable that makes the equation true, which is essential in algebraic problem-solving.

Front

What is the formula for the area of a rectangle with a variable length?

Back

The formula for the area of a rectangle with a variable length (l) and a constant width (w) is Area = l × w.

Front

What does it mean if a correlation is described as 'strong'?

Back

A strong correlation means that the data points closely follow a linear pattern, with a correlation coefficient close to -1 or 1.

Front

What is the relationship between the slope of a line and correlation?

Back

The slope of a line indicates the direction of the relationship: a positive slope indicates a positive correlation, while a negative slope indicates a negative correlation.