Algebra - Chapter 4.5 Flashcard Review

Front

What is the median of a set of numbers?

Back

The median is the middle value in a list of numbers sorted in ascending order. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you find the median of the numbers 4, 2, 7, 4, 3?

Back

First, sort the numbers: 2, 3, 4, 4, 7. The median is the middle number, which is 4.

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 a few high values that pull the mean to the right of the median.

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

Calculate the mean of the numbers 4, 2, 7, 4, 3.

Back

Mean = (4 + 2 + 7 + 4 + 3) / 5 = 20 / 5 = 4.

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 certain ranges.

Front

How do you determine the total number of students represented by a histogram?

Back

To find the total number of students, sum the heights of all the bars in the histogram, which represent the frequency of students in each category.

Front

If Gold's Gym buys 30 TVs at $400 each, what is the total cost?

Back

Total cost = 30 TVs * $400/TV = $12,000.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values).

Front

What is the difference between mean and median?

Back

The mean is the average of all values, while the median is the middle value when the data is sorted.