Circle/tick the right answer from the answers given below. 1.In regression model
ID: 3177587 • Letter: C
Question
Circle/tick the right answer from the answers given below.
1.In regression model, if every sample point is on regression line (all errors are 0), then
a)The correlation coefficient would be 0.
b)The correlation coefficient would be -1 or 1.
c)The coefficient of determination would be -1.
d)The coefficient of determination would be 0.
2.A graph of the sample points that will be used to develop a regression line is called
a)A sample graph
b)A regression diagram
c)A scatter diagram
d)A regression plot
3.The utilization factor for a system is defined as
a)Mean no. of people served divided by the mean no. of arrivals per time period
b)The average time a customer spends waiting in a queue
c)Proportion of the time the service facilities are in use
d)The percentage of idle time
4.A queuing system described as M/D/2 would have
a)Exponential service times
b)Two queues
c)Constant service times
d)Constant arrival rates
5.A feasible solution to an LPP
a)Must satisfy all of the problem’s constraints simultaneously
b)Need not satisfy all of the constraints, only some of them
c)Must be a corner point of the feasible region
d)Must give the maximum possible profit
6.A graphical method should only be used to solve an LPP when
a)There are only two constraints
b)There are more than two constraints
c)There are only two variables
d)There are more than two variables
Explanation / Answer
1.In regression model, if every sample point is on regression line (all errors are 0), then
b)The correlation coefficient would be -1 or 1.
2.A graph of the sample points that will be used to develop a regression line is called
c)A scatter diagram
3.The utilization factor for a system is defined as
c)Proportion of the time the service facilities are in use
4.A queuing system described as M/D/2 would have
c)Constant service times
5.A feasible solution to an LPP
a)Must satisfy all of the problem’s constraints simultaneously
6.A graphical method should only be used to solve an LPP when
c)There are only two variables