9A-2 True/False Normal probability plots require some judgment to interpret. 9A-

Question

9A-2 True/False Normal probability plots require some judgment to interpret. 9A-3 True/False The variance of the difference between two independent random variables (e.g. X1 - X2) is the difference in the variances of the twondividnal random variables 9A-4 True/False Looking at the normal probability plot below, the observations look like they could have been generated from a normal distribution Normal Q-Q Plot .2 9A-5 True/False The sample mean will always correspond to one of the observations in the data set (i.e. the sample mean will always be a data point in the data set) 9A-6 True/False The shape of a histogram can be sensitive to the bin width used to create the histogram (i.e. changing the bin width can change the shape) 9A-7 True/False The interquartile range (IQR) is a measure of center.

Explanation / Answer

9A-2 ) Normal probability plots require some judgement to interpret .

--------------------- TRUE .

9A-3 ) The variance of the difference between two independent random variables ( eg., X1 - X2 ) is the difference in the variances of the two individual random variables .

------------------------------- FALSE

9A-4 ) FALSE

Reason : If the observations were really generated from a normal distribution , the points would fall on a straight line .

9A-5 ) FALSE

9A-6 ) TRUE

9A-7 ) FALSE

Related Questions

Navigate

• Browse (All)
• Browse 9
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.