|
other defective product |
excessive waiting |
|
messy store other |
other |
|
messy store other |
messy store |
|
other messy store |
messy store |
|
defective product other |
messy store |
Create a bar chart and pie chart for this dataset.
The following data represents a random sample of 15 complaints registered with the customer service department...
A random sample of 75 registered voters were asked to describe their political views. The following data are the result of that survey. Category # of Responses Extremely Liberal 8 Liberal 6 Slightly Liberal 17 Moderate 2 Slightly Conservative 4 Conservative 16 Extremely Conservative 22 Which of the following is a correct statement? It is not appropriate to create a pie chart of this data because this is ordinal data. It is not appropriate to create a pie chart of...
The data below represents the number of complaints recorded the customer service desk at a local call center. The data shows the number of complaints logged each day over a seven day period. Day Complaints Received 1 12 2 2 3 7 4 1 5 3 6 0 7 1 What is the upper control limit of the c-chart? 9.50 3.45 12.00 Doesn’t exist Which of the following are true about the process? Special causes of variation are indicated There...
Customer Service. A customer service department asks its customers to rate their over-the-phone service on a scale of 1-20 immediately after their service has been completed. The department then matches each customer’s rating with the number of minutes the person waited on hold. The file “Hold” on d2l contains data for the ratings and number of minutes on hold for 20 customers. As demonstrated in the lecture, please create a subset data of size 16 and perform your statistical analysis...
The waiting times on hold for a call to a customer service department are observed to have the following probability distribution Number of calls, x Waiting time, minutes, f(x) 3 10 15 10 6 2 4 10 The expected value of the waiting time for a random call is most nearly: 7.3 minutes 9.2 minutes 11.5 minutes 15.0 minutes
The following data set represents the age of a random sample of cars on the road today. 1 3 3 7 10 12 The standard deviation of this sample is ________. 8.80 9.06 4.38 7.14
Problems 1-13: An appliance store recorded data for their customers who purchased warranties and had complaints about their appliances. The following data classifies the categories of complaints with whether the complaint occurred during or after the warranty. There were 100 complaints. Express your answers as decimals. If necessary, round to four decimal positions. Problems 14 and 15 are short answer, requiring justification. Electrical Mechanical Appearance During Warranty 18 13 31 After Warranty 12 22 4 Fill in the blank...
The following data represents the weight in pounds of a sample of young boys that are between the ages of 13 years and 15 years 126 231 132 126 128 128 131 136 140 226 156 149 115 117 138 133 131 134 Make a frequency table that represents this data Calculate the mean an the median Calculate standard deviation Create intervals Interpret the result
Do the following problems: The following are quality control data for a manufacturing process at Kensprt Chemical Company. The data show the temperature in degrees centigrade at five points in time during the manufacturing cycle. The company is interested in using quality control charts in monitoring the temperature of its manufacturing cycle. Construct an X bar and R chart and indicate what its tells you about the process. Sample X bar R 1 95.72 1.0 2 95.24 .9 3 95.38 ...
One of the major measures of the service quality of any organization is the speed with which it responds to customer complaints. A large department store is reviewing its service quality in last year. Last year, there were 30 complaints. The following data (including 30 numbers) represents the number of days between the receipt of a complaint and the resolution of the complaint: 54, 5, 35, 137, 31, 27, 152, 2, 123, 81, 74, 27, 11, 19, 126 110, 110,...
The following data set represents a population of values: 3 15 9 11 7 15 3 The total deviation from the population mean for the data values is. QQQQ Given that a sample is approximately bell-shaped with a mean of 76 and a standard deviation of 2, the approximate percentage of data values that is expected to fall between 70 and 82 is 75 percent 99.7 percent 68 percent 95 percent QQQ The numbers of minutes spent by 20 students waiting...