EOC STATS REVIEW

Front

What is the IQR (Interquartile Range)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the range of the middle 50% of the data.

Front

How do you calculate the standard deviation of a data set?

Back

Standard deviation is calculated by taking the square root of the variance, which is the average of the squared differences from the mean.

Front

What is the definition of the range in statistics?

Back

The range is the difference between the largest and smallest values in a data set.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in ascending order and identify the middle value. If there is an even number of observations, the median is the average of the two middle values.

Front

What is a pie chart used for?

Back

A pie chart is used to represent data in a circular graph, showing the proportions of different categories as slices of the pie.

Front

What does it mean if a data set is skewed?

Back

A data set is skewed if it is not symmetrical, meaning that one tail is longer or fatter than the other.

Front

What is the purpose of a box plot?

Back

A box plot visually summarizes the distribution of a data set by displaying its minimum, first quartile, median, third quartile, and maximum.

Front

How do you calculate the mean of a data set?

Back

The mean is calculated by adding all the values in the data set and dividing by the number of values.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a data set.