A1H Correlation and Causation Homework

Front

What is the definition of mean in statistics?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

What does standard deviation measure?

Back

Standard deviation measures the amount of variation or dispersion in a set of values. A low standard deviation means that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

Front

What is the independent variable in an experiment?

Back

The independent variable is the variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

The dependent variable is the variable that is measured and affected in an experiment, responding to changes in the independent variable.

Front

What does a strong positive correlation indicate?

Back

A strong positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What is the formula for calculating the mean?

Back

The formula for calculating the mean is: Mean = (Sum of all values) / (Number of values).

Front

What is the significance of a correlation coefficient (r)?

Back

The correlation coefficient (r) quantifies the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does an r value of 0.92 indicate?

Back

An r value of 0.92 indicates a strong positive correlation between the two variables.

Front

What is the relationship between the time a candle is burned and its height?

Back

The relationship is negative; as the time a candle is burned increases, its height decreases.