Complex Fractions_Scatterplots_Combinations/Perms_Normal_Distro

Front

What is a complex fraction?

Back

A complex fraction is a fraction where the numerator, the denominator, or both contain fractions. For example, (1/2)/(3/4) is a complex fraction.

Front

How do you simplify a complex fraction?

Back

To simplify a complex fraction, multiply the numerator and the denominator by the least common denominator (LCD) of the fractions involved.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a Cartesian plane.

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What is the formula for permutations of n items taken r at a time?

Back

The formula for permutations is P(n, r) = n! / (n - r)!, where n is the total number of items and r is the number of items to choose.

Front

What is the formula for combinations of n items taken r at a time?

Back

The formula for combinations is C(n, r) = n! / [r!(n - r)!], where n is the total number of items and r is the number of items to choose.

Front

What is a normal distribution?

Back

A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Front

What are the mean and standard deviation in a normal distribution?

Back

The mean is the average of all data points, and the standard deviation measures the dispersion of the data points from the mean.

Front

How do you interpret the standard deviation in a normal distribution?

Back

In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, and about 95% falls within two standard deviations.

Front

What does it mean if a scatter plot shows no association?

Back

No association means that there is no discernible relationship between the two variables being plotted.