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Manager
Joined: 12 Nov 2016
Posts: 117
Given Kudos: 87
Concentration: Entrepreneurship, Finance
Schools: Stanford MSx"19 (D) Sloan Fellows"19 (D)
GMAT 1: 620 Q36 V39 
GMAT 2: 650 Q47 V33
During a four-day period, a height measurement and a weight measuremen
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Updated on: 27 Sep 2023, 13:53
Updated on: 27 Sep 2023, 13:53
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During a four-day period, a height measurement and a weight measurement were recorded shortly after delivery for each baby born in a particular hospital. The 19 babies in the study were divided into two groups, Group A and Group B. The chart shows the length, in centimeters (cm), and weight, in kilograms (kg), for each of the 19 babies.
Based on the given information, use the drop-down menus to most accurately complete the following statements.
1. The correlation between length and weight for the babies in the study is
2. If a baby with weight less than 3.5 kg were selected at random, the probability that the baby would be a part of Group A is
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Official Answer
Dropdown 1: strongly positive
Dropdown 2: 0.40
Originally posted by Erjan_S on 15 Nov 2017, 02:49.
Last edited by Sajjad1994 on 27 Sep 2023, 13:53, edited 5 times in total.
Last edited by Sajjad1994 on 27 Sep 2023, 13:53, edited 5 times in total.
Updated - Complete topic (35).
Manager
Joined: 12 Nov 2016
Posts: 117
Given Kudos: 87
Concentration: Entrepreneurship, Finance
Schools: Stanford MSx"19 (D) Sloan Fellows"19 (D)
GMAT 1: 620 Q36 V39
GMAT 2: 650 Q47 V33
Re: During a four-day period, a height measurement and a weight measuremen
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16 Nov 2017, 04:57
16 Nov 2017, 04:57
It is probably due to structure of GMAT that IR does not count towards total score that there is little interest in IR questions... probably a growing trend for EA acceptance by leading business will change that
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Posted from my mobile device
Re: During a four-day period, a height measurement and a weight measuremen
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16 Nov 2017, 05:50
16 Nov 2017, 05:50
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Erjan_S wrote:
During a four-day period, a height measurement and a weight measurement were recorded shortly after delivery for each baby born in a particular hospital. The 19 babies in the study were divided into two groups, Group A and Group B. The chart shows the length, in centimeters (cm), and weight, in kilograms (kg), for each of the 19 babies.
Based on the given information, use the drop-down menus to most accurately complete the following statements.
The correlation between length and weight for the babies in the study is
negligible
strongly positive .
strongly negative
Is there a rule to decide on correlation? What I see here is that two babies with height 47 weigh differently and again at weight 48 and 4 babies with different weights at height 51 where two are much heavier, does not it contradict strong correlation?
Based on the given information, use the drop-down menus to most accurately complete the following statements.
The correlation between length and weight for the babies in the study is
negligible
strongly positive .
strongly negative
Is there a rule to decide on correlation? What I see here is that two babies with height 47 weigh differently and again at weight 48 and 4 babies with different weights at height 51 where two are much heavier, does not it contradict strong correlation?
HiErjan_S,
To find the correlation, observe the overall trend rather than individual values. You have to oberve the overall direction of the given values. In the given example its clear that height and weight are strongly positively correlated.
Check the following link:
https://www.statisticshowto.com/directio ... sociation/
Hope it helps.
