Shape, Center and Spread Practice

Front

What does it mean if a distribution is skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that most data points are concentrated on the right.

Front

What does it mean if a distribution is skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that most data points are concentrated on the left.

Front

What is a symmetrical distribution?

Back

A symmetrical distribution is one where the left and right sides of the distribution are mirror images of each other.

Front

What is a uniform distribution?

Back

A uniform distribution is one where all outcomes are equally likely, resulting in a flat histogram.

Front

How do you determine the shape of a distribution from a histogram?

Back

By observing the peaks, tails, and overall symmetry of the histogram.

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 interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3), representing the middle 50% of the data.

Front

How do you calculate the interquartile range?

Back

IQR = Q3 - Q1.

Front

What does it mean if a distribution is bimodal?

Back

A bimodal distribution has two different modes or peaks, indicating two prevalent values in the 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.