Question

Picnu uy that row. lected each day. We normally expect that 1/10 of the time, and an analysis of last year results are what we normally expect, is it correc is a normal distribution? California Daily 4 lottery, four digits between 0 and 9 inclusive are randomly se- We normally expect that each of the ten different digits will occur about me, and an analysis of last year's results shows that this did happen. Because the we normally expect, is it correct to say that the distribution of selected digits Stigation of the travel costs of college students, which of the following does not belong: center; variation; distribution; bar graph; outliers; changing patterns over 1 an investigation of the relationship between SAT scores and grade point averages (GPA) college students, which of the following graphs is most helpful: histogram; pie chart; scat- terplot; stemplot; dotplot? 8. As a quality control manager at Sony, you find that defective CDs have various causes, in- cluding worn machinery, human error, bad supplies, and packaging mistreatment. Which of the following graphs would be best for describing the causes of defects: histogram; scatterplot; Pareto chart; dotplot; pie chart? 9. What characteristic of a data set can be better understood by constructing a histogram? 10. A histogram is to be constructed from the brain sizes listed in Data Set 6 of Appendix B. Without actually constructing that histogram, simply identify two key features of the histo- gram that would suggest that the data have a normal distribution.

Answer 1

Que.5

It is wrong to say that the distribution of selected digits is normal distribution. Because selected digits follows uniform distribution.

Que.6

Bar graph is not useful for this data. Because it is used to represent categorical variable whereastravel cost of college students is numerical variable.

Que.7

Scatter plot is used to investigate relation between two variables

Que.8

Pie chart