Stats overview

Front

What is the range in a data set?

Back

The range is the difference between the highest and lowest values 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 values, average the two middle values.

Front

What does it mean if data is skewed right?

Back

If data is skewed right, it means that the tail on the right side of the distribution is longer or fatter than the left side, indicating that there are a few high values.

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 calculate the mean of a data set?

Back

To calculate the mean, add all the values together and divide by the number of values.

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.

Front

What is the difference between mean and median?

Back

The mean is the average of all values, while the median is the middle value when the data is ordered.

Front

What does it mean for data to be normally distributed?

Back

Data is normally distributed when it forms a bell-shaped curve, with most values clustering around the mean.

Front

How do you identify outliers in a data set?

Back

Outliers can be identified using the interquartile range (IQR) or by looking for values that are significantly higher or lower than the rest of the data.

Front

What is a box plot?

Back

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