1.1-1.4 Review

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data that varies.

Front

What does it mean if a distribution is uniform?

Back

A uniform distribution means that the data points are evenly spread out across the range, showing little to no variation.

Front

What does a box plot represent?

Back

A box plot visually summarizes the distribution of a dataset, showing the median, quartiles, and potential outliers.

Front

What is the difference between mean and median?

Back

The mean is the average of all data points, while the median is the middle value when data points are arranged in order.

Front

How can you determine if data is skewed?

Back

Data is skewed if one tail of the distribution is longer or fatter than the other, indicating that the mean and median will differ.

Front

What does the median of a box plot indicate?

Back

The median indicates the middle value of the dataset, providing a measure of central tendency that is less affected by outliers.

Front

What is the purpose of whiskers in a box plot?

Back

Whiskers extend from the box to show the range of the data, indicating the minimum and maximum values excluding outliers.

Front

What does it mean if the mean is greater than the median?

Back

If the mean is greater than the median, it suggests that the data is positively skewed, with higher values pulling the mean up.

Front

What is a dot plot?

Back

A dot plot is a simple visual representation of data where each data point is represented by a dot above a number line.

Front

How do you interpret the interquartile range (IQR) in a box plot?

Back

The IQR represents the range of the middle 50% of the data, calculated as the difference between the first and third quartiles.