The mean = (2 + 4 + 4 + 2) / 4 = 12/4 = 3.
To find the median, we first need to arrange the data in numerical order: 2, 2, 4, 4. Since there are an even number of values, the median is the average of the two middle values (2 and 4), so the median = (2 + 4) / 2 = 6 / 2 = 3.
The spread can be calculated in different ways, such as range, interquartile range, or standard deviation. In this case, the range would be the easiest to calculate. The range is the difference between the highest and lowest values, so the spread = 4 - 2 = 2.
Statistics Unit Test
7 of 187 of 18 Items
Question
Use the image to answer the question.
An illustration shows a bar graph with four bars extending vertically from the x-axis. The horizontal axis ranges from 10 to 13 in increments of 1 and the vertical axis ranges from 0 to 5 in increments of 1. The bar placed at 10 on the x-axis extends to 2 on the y-axis. The bar placed at 11 on the x-axis extends to 4 on the y-axis. The bar placed at 12 on the x-axis extends to 4 on the y-axis. The bar placed at 13 on the x-axis extends to 2 on the y-axis.
What are the values of the mean, median, and spread for the dataset shown in the bar graph?
(2 points)
The mean =
.
The median =
.
The spread =
.
1 answer
1 answer