IA 1 Advanced Algebra

Front

What is the mean in a normal distribution?

Back

The mean is the average value of a set of data points, representing the center of the distribution.

Front

What is the standard deviation in a normal distribution?

Back

The standard deviation measures the amount of variation or dispersion in a set of values.

Front

What does a z-score represent?

Back

A z-score indicates how many standard deviations an element is from the mean of the distribution.

Front

What is the empirical rule in statistics?

Back

The empirical rule states that for a normal distribution, approximately 68% of data falls within one standard deviation of the mean, 95% within two, and 99.7% within three.

Front

How do you calculate a z-score?

Back

Front

What does it mean if a z-score is negative?

Back

A negative z-score indicates that the value is below the mean.

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.

Front

What is the significance of a z-table?

Back

A z-table provides the area (probability) to the left of a given z-score in a standard normal distribution.

Front

What does it mean if a distribution is skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that most values are concentrated on the left.

Front

What does it mean if a distribution is skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that most values are concentrated on the right.