Data Analysis

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that shows the minimum, first quartile, median, third quartile, and maximum values.

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 the term 'range' refer to in data analysis?

Back

The range is the difference between the maximum and minimum 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 calculate the range of the following data set: 2, 5, 8, 3, 7?

Back

Range = Maximum value - Minimum value = 8 - 2 = 6.

Front

What is the purpose of a frequency table?

Back

A frequency table organizes data to show how often each value occurs in a data set.

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data.

Front

What does it mean if a data set is skewed?

Back

A skewed data set has a distribution that is not symmetrical, meaning one tail is longer or fatter than the other.

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 data is ordered.

Front

How can outliers affect the mean of a data set?

Back

Outliers can significantly increase or decrease the mean, making it less representative of the data set.