question 4 (1 point)\nthe dot plot displays the lengths of pencils (in inches) used by students in a class…
question 4 (1 point)\nthe dot plot displays the lengths of pencils (in inches) used by students in a class. what is the mean? inches\nlength (inches)\nblank 1:\nquestion 5 (1 point)\nis \what is the area of the floor in this classroom?\ a statistical question?\nno, it is not a statistical question, because the data required would not vary.\nyes, it is a statistical question, because the data required would not vary.\nyes, it is a statistical question, because the data required would vary.
Answer
Explanation:
Step1: Count the number of data - points and their values
There is 1 pencil of length 5 inches, 2 pencils of length 5.5 inches, 4 pencils of length 6 inches, 2 pencils of length 6.5 inches, and 1 pencil of length 7 inches.
Step2: Calculate the sum of all data - points
[5\times1 + 5.5\times2+6\times4 + 6.5\times2+7\times1=5 + 11+24 + 13+7=60]
Step3: Calculate the total number of data - points
[1 + 2+4 + 2+1=10]
Step4: Calculate the mean
The mean formula is (\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}), where (\sum_{i = 1}^{n}x_{i}) is the sum of data - points and (n) is the number of data - points. So, (\bar{x}=\frac{60}{10}=6)
Answer:
6
Explanation for Question 5:
A statistical question is one for which we expect variability in the data used to answer the question. The area of the floor in a classroom is a fixed value and does not vary.
Answer for Question 5:
No, it is not a statistical question, because the data required would not vary.