Symmetrical and Skewed Data + MoCT

Front

What is the definition of symmetrical data?

Back

Symmetrical data is data that is evenly distributed around a central point, meaning the left and right sides of the distribution are mirror images of each other.

Front

What is the definition of skewed data?

Back

Skewed data is data that is not evenly distributed, where one tail of the distribution is longer or fatter than the other.

Front

What does it mean if data is skewed left?

Back

If data is skewed left, it means that the left tail of the distribution is longer or fatter, indicating that there are a few lower values pulling the mean down.

Front

What does it mean if data is skewed right?

Back

If data is skewed right, it means that the right tail of the distribution is longer or fatter, indicating that there are a few higher values pulling the mean up.

Front

What is the median?

Back

The median is the middle value of a data set when it is ordered from least to greatest. It is a measure of central tendency that is less affected by outliers.

Front

What is the mean?

Back

The mean is the average of a data set, calculated by adding all the values together and dividing by the number of values. It can be affected by outliers.

Front

When is the median a better measure of central tendency than the mean?

Back

The median is a better measure of central tendency than the mean when the data set contains outliers or is skewed.

Front

When is the mean a better measure of central tendency than the median?

Back

The mean is a better measure of central tendency than the median when the data is symmetrically distributed without outliers.

Front

What is the first step in determining the shape of a data distribution?

Back

The first step is to create a visual representation of the data, such as a histogram or box plot, to observe its shape.

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).