Algebra I - One-Variable Statistics

Front

What is the mean of a set of numbers?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

How do you find the mean of the numbers 4, 9, 7, 10, 5?

Back

Add the numbers: 4 + 9 + 7 + 10 + 5 = 35. Then divide by the count (5): 35 / 5 = 7.

Front

What does it mean if a distribution is symmetric?

Back

A symmetric distribution has a balanced shape, where the left and right sides are mirror images of each other.

Front

What is the median of a data set?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, it is the average of the two middle numbers.

Front

How do you find the median of the numbers 200, 100, 90, 140?

Back

Arrange the numbers in order: 90, 100, 140, 200. The median is the average of 100 and 140: (100 + 140) / 2 = 120.

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 there are more lower values.

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 there are more higher values.

Front

What is a bimodal distribution?

Back

A bimodal distribution has two different modes, or peaks, indicating that there are two prevalent values in the data set.

Front

How do you determine the shape of a distribution?

Back

The shape of a distribution can be determined by analyzing the frequency of data points and their arrangement on a graph.

Front

What is the median of the math quiz results: 50, 63, 70, 75?

Back

Arrange the numbers: 50, 63, 70, 75. The median is the average of 63 and 70: (63 + 70) / 2 = 66.5.