Biology AQA New spec AS-level specimen paper 7401/1

Resigned to the fact that I'm going to fail biology. I have English lit tomorrow morning and I only get a 2 hour break... Plus I keep making silly mistakes which are costing me like 3 grades per paper

a few from our school have resigned from the exam and its SOO UNFAIR! As the rest of us didn't have the choice. ****ing piece of **** school

Does anybody have any predictions for tomorrow?
Also is the first paper more practical based and the second more knowledge based?

When are you meant to use a line of best fit and straight lines between points on a graphs in biology?

Good question - We've always been told to draw dot-to-dot for biology. For one of our mocks there was a graph which had a blatant curve to it but we had to join it dot to dot. I had no idea why.

If anyone can clarify this too I would be most grateful.

Hi!

Dot to dots are use for when the intermediate between valvues isn't known...

for example for a pH and enzyme value, you would have to use dot to dot because you don't know whether the values would actually follow the pattern in between your data.

However for something like total gas produced you can use a curve because you wont go from suddly 100cm3 to 50cm3 back to 200cm3 because once you have produced gas you can take it back...

really bad explanation but i hope this helps !

You're gonna do fine. Just focus and make the most of your few hours this evening and then get some nice sleep. The exam is at 13:20 so you will have a good few hours in the school day to do some questions.

when do you use spearman's rank, chi squared and t tests?

Resigned to the fact that I'm going to fail biology. I have English lit tomorrow morning and I only get a 2 hour break... Plus I keep making silly mistakes which are costing me like 3 grades per paper


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I felt sick this evening so I haven't been able to do any revision today, so I'm gonna cram tomorrow before the exam. No time for qus... Thanks but when I'm averaging 50% in specimen papers I've got no hope

No idea about Spearmans (Unless that is another name for the correlation coeffcient test?)

Use Chi-Squared when comparing CATEGORIC DATA and if you want to see the DIFFERENCE between the OBSERVED and the EXPECTED results

T-Test when comparing the MEANS between TWO sets of data.