Statistics Review

Front

What is the definition of statistics?

Back

Statistics is the study of collecting, analyzing, interpreting, presenting, and organizing data.

Front

What is a measure of central tendency?

Back

A measure of central tendency is a value that represents a typical or central point in a dataset, commonly including mean, median, and mode.

Front

What is the mean?

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 the median?

Back

The median is the middle value in a dataset when the numbers are arranged in order.

Front

What is the mode?

Back

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

Front

What is the range of a dataset?

Back

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

Front

What is interquartile range (IQR)?

Back

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

Front

What does it mean if a distribution is right skewed?

Back

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

Front

What is a frequency distribution?

Back

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

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges.