Alg II - 5.1-5.4

Front

What is the 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 is standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values.

Front

How do you calculate the average of a set of numbers?

Back

To calculate the average, add all the numbers together and divide by the total count of numbers.

Front

What does it mean to be 3 standard deviations above the mean?

Back

It means the value is significantly higher than the average, specifically 3 times the standard deviation added to the mean.

Front

What is the formula for calculating the average score?

Back

Average Score = (Sum of all scores) / (Number of scores).

Front

What is a percentile in statistics?

Back

A percentile is a measure used to indicate the value below which a given percentage of observations fall.

Front

What is the range of a data set?

Back

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

Front

What does it mean if 25% of data falls within a certain range?

Back

It means that one-quarter of the data points are less than or equal to the upper limit of that range.

Front

How do you interpret a standard deviation of 2 inches in the context of height?

Back

A standard deviation of 2 inches means that most women's heights fall within 2 inches above or below the average height.

Front

What is the significance of the average score of 91 in a class?

Back

An average score of 91 indicates that, on average, students performed well on the exam.