Data and Statistics

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 (bins).

Front

What is the median in a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is a box plot?

Back

A box plot (or whisker plot) is a standardized way of displaying the distribution of data based on a five-number summary: minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

Front

What is the five-number summary?

Back

The five-number summary consists of the minimum, first quartile (Q1), median, third quartile (Q3), and maximum of a data set.

Front

What is the interquartile range (IQR)?

Back

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

Front

How do you find the mode of a data set?

Back

The mode is the value that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

What is a dot plot?

Back

A dot plot is a simple statistical chart that uses dots to represent the frequency of data points in a data set, allowing for easy visualization of distribution.

Front

What does it mean for data to be skewed?

Back

Data is skewed when it is not symmetrically distributed, meaning one tail is longer or fatter than the other. Right skewed (positive) has a longer right tail, while left skewed (negative) has a longer left tail.

Front

What is a data set?

Back

A data set is a collection of related data points or values, often organized in a table or list, used for analysis.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a data set, often represented in tables or graphs.