Data Representations

Front

What is a data representation?

Back

A data representation is a way of displaying data in a visual format, such as graphs, charts, or plots, to make it easier to understand and analyze.

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

How do you find the median of a data set?

Back

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

Front

What does a box-and-whisker plot show?

Back

A box-and-whisker plot displays the distribution of a data set based on five summary statistics: minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

Front

What does it mean if a distribution is skewed to the right?

Back

A distribution skewed to the right has a longer tail on the right side, indicating that there are a few higher values that are pulling the mean to the right.

Front

What is the mode of a data set?

Back

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

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

What is a frequency table?

Back

A frequency table is a table that displays the number of occurrences of each value or category in a data set.

Front

How do you interpret a box-and-whisker plot?

Back

To interpret a box-and-whisker plot, look at the median, quartiles, and any outliers to understand the spread and center of the data.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from the other data points, often lying outside the range of the rest of the data.