Flashcard Review for Lessons 9-14

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly different from the other values in a data set. It can be much higher or lower than the rest of the data.

Front

Identify the outlier in the following set: 2, 4, 6, 8, 25.

Back

25 is the outlier.

Front

What does it mean if more than half of the students scored above a certain percentage?

Back

It means that the majority of students performed well, but if stated as false, it indicates that less than half scored above that percentage.

Front

What is the shape of a distribution that is skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that there are a few high values pulling the mean to the right.

Front

What is standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values.

Front

Calculate the standard deviation for the following data: 5, 10, 7, 12, 0, 20, 15, 22, 8, 2.

Back

The standard deviation is 7.26.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

Find the range of the following data: 100, 42, 120, 42, 30.

Back

The range is 90.

Front

What does it mean if a distribution is symmetrical?

Back

A symmetrical distribution has equal tails on both sides of the mean, indicating that the data is evenly distributed.

Front

What is a skewed left distribution?

Back

A left-skewed distribution has a longer tail on the left side, indicating that there are a few low values pulling the mean to the left.