Here is the distribution of educational level of adults aged 25 and over in the United States in the year 2012. Intervals include the left endpoint but not the right. You can define "17+" to mean "17 to 22." The percent with 22 or more years of education was too small to make a difference to the table.
Educational level (years of schooling) Percent
0-9 5
9-12 7
12-13 30
13-16 26
16-17 20
17+ 12
Source: Adapted from Educational Attainment, Census Bureau 2012
: 2.0 points
Each part is worth 1 point.
a) A histogram of educational level will be drawn using this table. Find the height of the bar over the interval 13-16, in units of percent per year.
unanswered
b) Which of the following is a correct histogram based on this table?
It is problem 3
Any ideas on part(a)?
To find the height of the bar over the interval 13-16 in the histogram, we need to calculate the range of the interval and divide it by the corresponding percentage.
In this case, the interval is from 13 to 16 years of schooling, and the percentage for this interval is given as 26%.
To calculate the height of the bar, we need to divide the percentage by the range of the interval:
Height of the bar = Percentage / Range of Interval
The range of the interval is 16 - 13 = 3.
Therefore, the height of the bar over the interval 13-16 is:
Height of the bar = 26% / 3 = 8.67% per year.
So, the height of the bar over the interval 13-16 in units of percent per year is approximately 8.67%.
For part b) of your question, as you have not provided any histogram options, it is not possible to determine the correct histogram based on the table. Please provide the options for a more accurate answer.