IA Revision #3 Statistical Choice/ Data processing flow chart self-check
Do Show Justify
Does your data require calculation of %change? This is not likely for many of you. think, mass change of potatoes in osmosis
yes and I have included them and I have justified this with brief statement
no go to next question
yes, but this is currently incomplete or missing - go to next question
Does your data require a central tendency calculation- ie, mean w/standard deviation. This is likely to be many of you so check
Yes , and it is in my report
yes but it is not in my report and I need to do this
No, at next question answer n/a
no my data is better reflected using median, mode or range and I know I have to justify this choice in the report
Did you briefly explain why your data needs a mean/ sd - have you justified this and also described what it means
no but I will make sure to do this in my report
If you said no or N/A for mean/SD; choose why
correlation study - each data point is unique and using a common approximated value like mean is not meaningful/helpful
phylogeny study - not helpful for analysis
not enough data trials for SD but I did get mean or I used median/ mode/ range and justified it
didn't realize that pretty much all labs will requirre this as minimum description of describing an approximation of a common value
chose to show mode/ median or range instead and I know I must include a justification for this
Do you have enough trials at each level [ min 5 trials] to calculate standard deviation?
yes and I have calculated the mean and the standard deviation
no and I will make sure to discuss this in my report - especially under limitations
Have you shown a sample calculation and included how you got these calculations in your report - TI84 or Excel or Sheets
Have you cited reference(s) used for any explanation of what these mean? [Hint statistical methods references in Investigations Folder including flow charts etc can be cited].
Inferential statistics Dichotomous Questions
1.Did you look for: a trend or relationship between variables? are they related
no go to Q2
2.Did you look for a DIFFERENCE between levels of manipulated variable? are they different and is this difference significant
yes go to Q3
no go to Q4
3.Did you have two levels for your manipulated variable
more than 2 levels -ANOVA
n/a go to 4
4. Did you look to see if observed matches what you would have expected?
yes-chi-square goodness of fit
no go to Q5
5. Did you look to see if two variables are dependent on each other or associated with each other?
yes- chi-square test of association
Have you included a justification for your selected inferential statistic
N/A - I will leave a comment with why in the comment box
Have you cited your selected method in your report - hint- statistical methods folder material useful for this.
FYI- Significant items missing or in error will reduce the data processing section of IA draft revision score by the following factor: if incomplete or significant error uncorrected -1/3; if significantly incomplete by -1/2; nothing submitted by - 1.
Do you understand the score impact of incomplete or missing corrections to this section of IA draft revision score?
no and I will leave a comment below and I will discuss this personally with Ms K asap as I know there is tight deadline
Have you completed and received your 1st peer evaluation form- dichotomous key - IA Revision Assignment #1?
Have you completed the IA revision assignment #2 - aka Assignment 3/2/18 google form
yes and it was useful
yes and I will continue to go back to help with my revision process
not yet and I realize that there is a tight deadline for potential revisions that cannot be adjusted for lateness
no due to technical problems that I am responsible for alerting Ms K about asap.
Have you attended IA tutorials either this semester or last semester
email for form confirmation sent
Send me a copy of my responses.
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