Biology paper 52

[happyperson]

Was it t-test or chi square test in q2?

I wrote t test as data was continuous. Mean velocity was taken, and value of velocity includes distance and time and both are continuous not categoric.

 

[anonymous1122]

I wrote the same

Is starch test fine? Since iodine would be blueblack with beta since it did partial hydrolysis and brown with gamma as starch was completely hydrolysed?

 

[Princess Raven]

which anomalies did you circle?

I don't really rmr but two of them were not in the general trend it was in beginning rows not at the end I think One was around 1900 something. What did u write about how we should deal with them

 

[Omar Haider]

I don't really rmr but two of them were not in the general trend it was in beginning rows not at the end I think One was around 1900 something. What did u write about how we should deal with them

I said calculate a mean, because there were already enough repeats

 

[Princess Raven]

I

I said calculate a mean, because there were already enough repeats

I said the anomalies should be ignored when mean is calculated don't know if it's right tho

 

[Jacqulene Preethi]

I

I said the anomalies should be ignored when mean is calculated don't know if it's right tho

I think it is

 

[Jacqulene Preethi]

is it correct to mention that experiment is conducted at different females at the same time of day

I think it is because the velocity might slow down at night. I remember my teacher saying that when we did a question on reaction time

 

[Distillator]

Alright many of you were asking whether it was t test or Chi Squared test, The answer was t test because MEANS of two sets of data were being compared. Please do note we only use chi squared test for discreet values the values we had were continuous as they had their absolute errors included with them. Also one other thing Chi squared test is only used when you already have an expected values of results of the experiment. As for how to deal with the anamolies, you don't include them in calculations when finding mean or you just repeat take readings again.

 

[happyperson]

I

I said the anomalies should be ignored when mean is calculated don't know if it's right tho

Its correct, I wrote same too.

 

[princessnoor]

you can also write the intensity of the impulse should be the same

I wrote distance b/w electrodea
Locations of electrodes placed in each
Same initial electric charge / stimuli
And i also wrote age ( which is wrog i think)
Will i still get 3 marks?

 

[Kinza Rana]

It was the t-test because the data had a normal distribution.

How many marks did this question carry all together?

 

[Kinza Rana]

Alright many of you were asking whether it was t test or Chi Squared test, The answer was t test because MEANS of two sets of data were being compared. Please do note we only use chi squared test for discreet values the values we had were continuous as they had their absolute errors included with them. Also one other thing Chi squared test is only used when you already have an expected values of results of the experiment. As for how to deal with the anamolies, you don't include them in calculations when finding mean or you just repeat take readings again.

Ohhh okay...

 

[samantha liyanage]

I think it is because the velocity might slow down at night. I remember my teacher saying that when we did a question on reaction time

He did?
I wrote about mass, caffeine, drugs and distance between electrodes

 

[princessnoor]

How many marks did this question carry all together?

2

 

[Jacqulene Preethi]

He did?
I wrote about mass, caffeine, drugs and distance between electrodes

Yep those are right too. And he did say that reaction time slows down at night so I'm guessing so does the velocity....well I hope it's correct

 

[Kinza Rana]

2

Thankx

 

[thementor]

How many marks did this question carry all together?

10 for Q2.
and the t-test part carried 2 marks.

 

[thementor]

I wrote distance b/w electrodea
Locations of electrodes placed in each
Same initial electric charge / stimuli
And i also wrote age ( which is wrog i think)
Will i still get 3 marks?

Age is wrong. You will get 2

 

[thementor]

I don't really rmr but two of them were not in the general trend it was in beginning rows not at the end I think One was around 1900 something. What did u write about how we should deal with them

I said repeat the experiment. I think that's wrong

 

[thementor]

Is starch test fine? Since iodine would be blueblack with beta since it did partial hydrolysis and brown with gamma as starch was completely hydrolysed?

Yes it could be. I am not sure