Exam 1: Describing Data: Graphical

400 adults are to be surveyed,what frequencies would you expect to occur for each unwanted item listed on the snapshot?

Gender and state of birth are examples of which type of data?

The bar chart that best identifies major causes of problems or defects by displaying the frequency of defect causes is called a:

A stem-and-leaf is an exploratory data analysis (EDA)graph that is an alternative to the line graph.

Is it possible for a set of observations to be either a sample or a population? Give an illustrative example.

Management has given the production line the goal of reducing their defects by 50%.What two defects would you suggest they give special attention to in working toward this goal? Explain.

The histogram of a sample should have a distribution shape very similar to that of the population from which the sample was drawn.

Which of the following statements involve descriptive statistics as opposed to inferential statistics?

Modify the following statement to reflect possible uncertainty: "The price of GM stock will be lower in six months than it is now."

Which of the following is an example of a discrete random variable?

Briefly discuss the Pareto diagram.

The ratio scale of measurement indicates both rank and distance from a natural zero.

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION: An investment advisor recently reviewed the account activity of a sample of 10 of his clients and calculated the average number of stock trades per month over the past year for each client.He obtained the following data values: 10.2,2.5,11.4,3.2,1.1,3.4,8.4,9.7,11.2,and 2.4. -Construct a relative frequency and percent distributions of the data.

A measurement scale that rates product quality as either 1 = poor,2 = average and 3 = good is known as:

Describe briefly what is meant by simple random sampling.

A table used to organize data where the left column includes classes or groups and the right column includes the frequencies or observation for each class is called a:

The scatter plot can be used to detect whether a linear relationship exists in the data.

At a large company,the majority of the employees earn from $22,000 to $32,000 per year.Middle management employees earn between $32,000 and $52,000 per year while top management earn between $54,000 and $104,000 per year.A histogram of all salaries would have which of the following shapes?

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION: The final-inspection defect report for an assembly line is reported on the table and Pareto diagram as shown below: -What is the total defect count in the report?

Explain the difference between the terms "variable" and "data." Include an illustration that demonstrates this difference.