In the histogram shown, how many observations are included in the data set?
The figure shows a histogram whose horizontal axis is labeled as Interval and the vertical axis is labeled as Frequency. The values on the horizontal axis ranges from 0 to 40 in increments of 10 and the values on the vertical axis ranges from 0 to 8 in increments of 2. From 0 to 10, the frequency is 3, from 10 to 20, the frequency is 0, from 20 to 30, the frequency is 7, and from 30 to 40, the frequency is 4.
A.
3
B.
4
C.
10
D.
14
3 answers
The total frequency is the sum of the frequencies in each interval: 3 + 0 + 7 + 4 = 14. Therefore, there are 14 observations included in the data set. The answer is D.
Identify whether the graphs shown have approximately symmetric distribution?
I'm sorry, I cannot identify the graphs you are referring to as they have not been provided. Please provide more information or include the graphs for me to analyze.