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Sajjad1994
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The graph is a scatter plot with 30 points, each representing the amou Updated on: 10 Nov 2023, 08:17
Originally posted by Sajjad1994 on 19 Aug 2021, 21:15.
Last edited by BottomJee on 10 Nov 2023, 08:17, edited 2 times in total.
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Dropdown 1: 7
Dropdown 2: 10 and 100
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53% (01:57) correct 47% (01:39) wrong based on 912 sessions

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The graph is a scatter plot with 30 points, each representing the amount of bacteria present after a certain amount of time. The solid line is the regression line.

Use the drop-down menus to fill in the blanks in each of the following statements based on the information given by the graph.

1. The slope of the regression line is approximately .

2. The culture population ranges between .



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The graph is a scatter plot with 30 points, each representing the amou 31 May 2023, 03:15
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Sajjad1994
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1. (x, y) coordinates are (1,14) and (4.8,42)= 42-14/4.8-1= 7(approximate)...it is the best fit value
2. (10,100)

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The graph is a scatter plot with 30 points, each representing the amou 31 May 2023, 06:48
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Slope is coming out to be 10 and 10 is not there in the options. Can anyone clarify my doubt?

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The graph is a scatter plot with 30 points, each representing the amou 19 Jun 2023, 20:57
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divyadna
Slope is coming out to be 10 and 10 is not there in the options. Can anyone clarify my doubt?

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I'm also getting 10! The explanation is incorrect as well; it says that (x2, y2) is (6, 45), but that's clearly not true.
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The graph is a scatter plot with 30 points, each representing the amou 12 Apr 2024, 17:33
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Sajjad1994

For the Q1, the answer is coming out to be 10.

That option is not there amongst the given options.

Am I correct?
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The graph is a scatter plot with 30 points, each representing the amou 14 Apr 2024, 03:46
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rn1112
Sajjad1994

For the Q1, the answer is coming out to be 10.

That option is not there amongst the given options.

Am I correct?
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The answer is 7. 

At 1.0, culture opulation is between 7-8, at 2.0, it ranges between 17-19; and at 3.0, it is between 23-24. So the answer is less than 10. 7 is the maximum among the answers, so select it.
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The graph is a scatter plot with 30 points, each representing the amou 14 Apr 2024, 04:08
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Graph seems weird though it can't be 7 when you see x axis range more than 3
And also two point 2,20 and 4, 40
Sajjad1994
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The graph is a scatter plot with 30 points, each representing the amou 21 Jun 2024, 08:42
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rn1112
Sajjad1994

For the Q1, the answer is coming out to be 10.

That option is not there amongst the given options.

Am I correct?
The answer is 7. 

At 1.0, culture opulation is between 7-8, at 2.0, it ranges between 17-19; and at 3.0, it is between 23-24. So the answer is less than 10. 7 is the maximum among the answers, so select it.
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@Sajjad1994
­I hope that's an OA that you have posted. If i check the regression line whose slope is sought then at time 1s the culture population is 10. Whereas for time = 2s the culture population is 20. So by using (Y2-Y1) / (X2-X1) = (20-10) / (2-1) = 10.

However, when the exact points of data is observed then the data points suggested by you feel on point. Still we are not required to consider them as we are asked the slope of regression line. So wouldn't the slope of regression line be, as i calulcated above.  ­
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The graph is a scatter plot with 30 points, each representing the amou 02 Apr 2025, 08:25
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Please share the official explanation
Sajjad1994

rn1112
Sajjad1994

For the Q1, the answer is coming out to be 10.

That option is not there amongst the given options.

Am I correct?
The answer is 7.

At 1.0, culture opulation is between 7-8, at 2.0, it ranges between 17-19; and at 3.0, it is between 23-24. So the answer is less than 10. 7 is the maximum among the answers, so select it.
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The graph is a scatter plot with 30 points, each representing the amou 03 Apr 2025, 01:23
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Sajjad1994

Slope of a graph is given as: (y2 - y1)/(x2 - x1)

So approximately, (105-10)/(10-1) ~ 10

Just like everyone else, I too got the slope as 10.

What's wrong with my approach?

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