Shape of Data

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 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 larger number of lower values.

Front

What does it mean if data is 'skewed left'?

Back

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

Front

What is a symmetric distribution?

Back

A symmetric distribution is one where the left and right sides of the distribution are mirror images of each other, meaning the data is evenly distributed around the mean.

Front

What is bimodal distribution?

Back

A bimodal distribution is a probability distribution with two different modes, which appear as distinct peaks in the frequency of data.

Front

How do you interpret the height of bars in a histogram?

Back

The height of the bars in a histogram represents the frequency of data points within each bin; taller bars indicate more data points.

Front

What is the importance of understanding the shape of data?

Back

Understanding the shape of data helps in identifying patterns, making predictions, and choosing the right statistical methods for analysis.

Front

What does 'uniform distribution' mean?

Back

Uniform distribution means that all outcomes are equally likely; the histogram would show bars of equal height.

Front

What is the mode in a data set?

Back

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

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.