|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
The PQ&R Corporation has developed a collection of training materials and skills tests for activities that accurately represent the types of tasks performed by employees in a production environment. Before any instruction is given, each trainee is asked to perform the training battery—a series of tasks for which they are about to receive training. Immediately on completion of instruction, trainees are again asked to perform the training battery to assess the effectiveness of instruction. After performing the battery for the second time, the trainees become employees of PQ&R. On completion of their six-month introductory period of employment, trainees are required to perform the training battery a third time.
For at least one trainee, the posttraining score was greater than 3 times the pretraining score.: Yes
The data for Session 1 exhibit a positive correlation between pretraining and posttraining scores.: Yes
For the three sessions, the range of pretraining scores is least for Session 2.: Yes
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
56% (03:32) correct
44%
(03:41)
wrong
based on 1811
sessions
History
Date
Time
Result
Not Attempted Yet
1. For each of the following statements about the scores in Session 1, Session 2, and Session 3, select Yes if the statement is supported by the information provided. Otherwise, select No.
| Yes | No | |
| For at least one trainee, the posttraining score was greater than 3 times the pretraining score. | ||
| The data for Session 1 exhibit a positive correlation between pretraining and posttraining scores. | ||
| For the three sessions, the range of pretraining scores is least for Session 2. |
ShowHide Answer
Official Answer
For at least one trainee, the posttraining score was greater than 3 times the pretraining score.: Yes
The data for Session 1 exhibit a positive correlation between pretraining and posttraining scores.: Yes
For the three sessions, the range of pretraining scores is least for Session 2.: Yes
Session 1: Successful
Session 2: Successful
Session 3: Successful
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
62% (01:47) correct
38%
(01:44)
wrong
based on 1808
sessions
History
Date
Time
Result
Not Attempted Yet
2. PQ&R considers a training session successful provided that the average (arithmetic mean) posttraining score for the trainees in that session is at least 50% higher than the corresponding average pretraining score.
For each of the three training sessions, select Successful if, on the basis of the given information, it would be considered successful by PQ&R. Otherwise, select Unsuccessful.
For each of the three training sessions, select Successful if, on the basis of the given information, it would be considered successful by PQ&R. Otherwise, select Unsuccessful.
| Successful | Unsuccessful | |
| Session 1 | ||
| Session 2 | ||
| Session 3 |
ShowHide Answer
Official Answer
Session 1: Successful
Session 2: Successful
Session 3: Successful
On the job, the trainees are usually assigned only a small subset of the tasks included in the training battery.
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
55% (01:59) correct
45%
(02:02)
wrong
based on 1817
sessions
History
Date
Time
Result
Not Attempted Yet
3. Immediately prior to performing the training battery at the six-month mark, all the trainees in Session 1 were subject to on-the-job observation and their performance was scored. For tasks performed during observation that were also included in the battery, the average (arithmetic mean) score was 99.5. Which one of the following would, if true, best explain the apparent discrepancy between this result and the given information?
| Activities performed out of the controlled assessment environment were more prone to error. | |
| The tasks that trainees performed most poorly during on-the-job observation are those that the trainees perform least frequently on the job. | |
| Trainees completing the training battery at the six-month mark were much more likely to perform the tasks well. | |
| Trainees in Session 1 participated in extensive review of their training materials between the posttraining and six-month administrations of the training battery. | |
| On the job, the trainees are usually assigned only a small subset of the tasks included in the training battery. |
ShowHide Answer
Official Answer
On the job, the trainees are usually assigned only a small subset of the tasks included in the training battery.
Attachment:
2.jpg [ 131.41 KiB | Viewed 24885 times ]
Attachment:
1.jpg [ 19.73 KiB | Viewed 24733 times ]
Question exposed a gap?
Take sectional Adaptive Quant, Verbal, or DI tests on GMAT Club and review the detailed score report.
Get started →
05 Apr 2021, 07:40
Kudos
Bookmarks
Official Explanation
1. For each of the following statements about the scores in Session 1, Session 2, and Session 3, select Yes if the statement is supported by the information provided. Otherwise, select No.
RO1
The Session 2 graphs show that all the trainees scored less than 20 in pretraining and greater than 60 in posttraining, so their pretraining scores were greater than 3 times their posttraining scores.
The correct answer is Yes.
RO2
The Session 1 graphs show that the order of trainees by pretraining score is identical to the order by posttraining score. Therefore, there is a positive correlation between the two scores.
The correct answer is Yes.
RO3
The Session 1 graphs show that pretraining scores ranged from approximately 25 to 45, for a range of 20. The Session 2 graphs show that pretraining scores ranged from approximately 5 to 15, for a range of 10. The Session 3 graphs show that pretraining scores ranged from approximately 22 to 45, for a range of 23. Thus, the range is least for Session 2.
The correct answer is Yes.
For each of the three training sessions, select Successful if, on the basis of the given information, it would be considered successful by PQ&R. Otherwise, select Unsuccessful.
To find the average pretraining score and post-training score for each session, one could add the 8 scores of each type and divide by the number of scores (8). A quicker estimate can be made, however, by comparing the highest pretraining score and lowest post-training score for each session. If the lowest post-training score is at least 50% higher than the highest pretraining score, the average post-training score will also be at least 50% higher than the average pretraining score, and no further calculation is needed to determine whether the training session was successful.
RO1
In Session 1, the highest pretraining score according to the graph is approximately 45. The lowest post-training score is approximately 70. The percent of increase from 45 to 70 is [(70−45)/(45)×100]%~56%, which is greater than 50%
The correct answer is Successful.
RO2
In Session 2, the highest pretraining score according to the graph is approximately 15. The lowest posttraining score is approximately 65. The percent of increase from 15 to 65 is [(65−15)/(15)×100]%~333%, which is greater than 50%
The correct answer is Successful.
RO3
In Session 3, the highest pretraining score according to the graph is approximately 45. The lowest posttraining score is approximately 80. The percent of increase from 45 to 80 is [(80−45)/(45)×100]%~78%, which is greater than 50%
The correct answer is Successful.
Immediately prior to performing the training battery at the six-month mark, all the trainees in Session 1 were subject to on-the-job observation and their performance was scored. For tasks performed during observation that were also included in the battery, the average (arithmetic mean) score was 99.5. Which one of the following would, if true, best explain the apparent discrepancy between this result and the given information?
According to the information provided, the trainees in Session 1 on average performed higher in their on-the-job observation (99.5%) than in their six-month training battery. (The graph shows that only 2 of 8 trainees scored 99% or higher in the six-month training battery.) If activities performed out of the controlled assessment environment were more prone to error, the on-the-job observation scores should be lower, not higher (excluding A).
Additionally, B, C, and D do not help explain the discrepancy because they provide no basis for comparing on-the-job performance with performance on the test battery. If, however, the training battery contained many more tasks than did the on-the-job observation (E), it is possible that trainees scored lower on those additional tasks. That could explain the discrepancy between the on-the-job observation and the six-month training battery.
Answer: E
1. For each of the following statements about the scores in Session 1, Session 2, and Session 3, select Yes if the statement is supported by the information provided. Otherwise, select No.
RO1
The Session 2 graphs show that all the trainees scored less than 20 in pretraining and greater than 60 in posttraining, so their pretraining scores were greater than 3 times their posttraining scores.
The correct answer is Yes.
RO2
The Session 1 graphs show that the order of trainees by pretraining score is identical to the order by posttraining score. Therefore, there is a positive correlation between the two scores.
The correct answer is Yes.
RO3
The Session 1 graphs show that pretraining scores ranged from approximately 25 to 45, for a range of 20. The Session 2 graphs show that pretraining scores ranged from approximately 5 to 15, for a range of 10. The Session 3 graphs show that pretraining scores ranged from approximately 22 to 45, for a range of 23. Thus, the range is least for Session 2.
The correct answer is Yes.
For each of the three training sessions, select Successful if, on the basis of the given information, it would be considered successful by PQ&R. Otherwise, select Unsuccessful.
To find the average pretraining score and post-training score for each session, one could add the 8 scores of each type and divide by the number of scores (8). A quicker estimate can be made, however, by comparing the highest pretraining score and lowest post-training score for each session. If the lowest post-training score is at least 50% higher than the highest pretraining score, the average post-training score will also be at least 50% higher than the average pretraining score, and no further calculation is needed to determine whether the training session was successful.
RO1
In Session 1, the highest pretraining score according to the graph is approximately 45. The lowest post-training score is approximately 70. The percent of increase from 45 to 70 is [(70−45)/(45)×100]%~56%, which is greater than 50%
The correct answer is Successful.
RO2
In Session 2, the highest pretraining score according to the graph is approximately 15. The lowest posttraining score is approximately 65. The percent of increase from 15 to 65 is [(65−15)/(15)×100]%~333%, which is greater than 50%
The correct answer is Successful.
RO3
In Session 3, the highest pretraining score according to the graph is approximately 45. The lowest posttraining score is approximately 80. The percent of increase from 45 to 80 is [(80−45)/(45)×100]%~78%, which is greater than 50%
The correct answer is Successful.
Immediately prior to performing the training battery at the six-month mark, all the trainees in Session 1 were subject to on-the-job observation and their performance was scored. For tasks performed during observation that were also included in the battery, the average (arithmetic mean) score was 99.5. Which one of the following would, if true, best explain the apparent discrepancy between this result and the given information?
According to the information provided, the trainees in Session 1 on average performed higher in their on-the-job observation (99.5%) than in their six-month training battery. (The graph shows that only 2 of 8 trainees scored 99% or higher in the six-month training battery.) If activities performed out of the controlled assessment environment were more prone to error, the on-the-job observation scores should be lower, not higher (excluding A).
Additionally, B, C, and D do not help explain the discrepancy because they provide no basis for comparing on-the-job performance with performance on the test battery. If, however, the training battery contained many more tasks than did the on-the-job observation (E), it is possible that trainees scored lower on those additional tasks. That could explain the discrepancy between the on-the-job observation and the six-month training battery.
Answer: E
General Discussion
24 Jun 2020, 10:48
Kudos
Bookmarks
1)a)Yes,we can see for example that 2a,2b have post training scores more than 3 times the pretraining scores
b)Yes,in the session 1 as the pretraining scores are increasing the post training scores are also increasing
c)Yes,we can easily that the highest and lowest value are lowest for session 2 when compared with that of session 1 &3,and the distance between the highest and lowest value is list so yes the range is least.
2) Yes,all the sessions are successful because we can easily see that the individual values for post training sessions are atleast greater than 1.5 times the values of pretraining session so obviously the average will also be at least 1.5 greater.
3)E,Since if the trainees are assigned some subset of tasks theb only the average score can go upto 99.5 because if they would have given all the tasks then the avg would be pretty much lower
Posted from my mobile device
b)Yes,in the session 1 as the pretraining scores are increasing the post training scores are also increasing
c)Yes,we can easily that the highest and lowest value are lowest for session 2 when compared with that of session 1 &3,and the distance between the highest and lowest value is list so yes the range is least.
2) Yes,all the sessions are successful because we can easily see that the individual values for post training sessions are atleast greater than 1.5 times the values of pretraining session so obviously the average will also be at least 1.5 greater.
3)E,Since if the trainees are assigned some subset of tasks theb only the average score can go upto 99.5 because if they would have given all the tasks then the avg would be pretty much lower
Posted from my mobile device
