Mean, SD, t-test
Compute the mean and standard deviation and explain the purpose of a t-test for your data.
Statistics practice: mean and standard deviation calculated for each condition with steps shown, plus a written explanation of what a t-test compares and whether it applies to the data.
- 1Do thisCompute the mean and standard deviation and explain the purpose of a t-test for your data.
- 2Use this resource
- 3Submit thisData table: Statistics practice: mean and standard deviation calculated for each condition with steps shown, plus a written explanation of what a t-test compares and whether it applies to the data.
- 4Submit it here
- 1CMSD website. Go to clevelandmetroschools.org and click the Clever button.
- 2Clever. Clever opens. Sign in if it asks.
- 3Microsoft (district) login. Use your district Microsoft account (the one for school).
- 4Schoology. Open Schoology, then your class, then Assignments, and find the file named below.
The file to submit is named: Biotechnology for Health (Biomedical Innovations) › Experimental vs observational studies, sample size, graphing, mean, SD, t-test purpose. › Data tableOpen Schoology
- CER:
- Claim, Evidence, Reasoning — make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure — the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities — you open it through Schoology.
Minute-by-minute · 80-minute block
💡 Big idea: Summary statistics describe your data honestly; a t-test asks whether the difference you observed is large enough to trust -- both skills are required before drawing any conclusion.
- 0-10Review mean and standard deviation formulas with a small sample dataset
- 10-30Calculate the mean of each condition in your dataset -- show all steps
- 30-50Calculate the standard deviation for each condition -- show all steps
- 50-65Explain what a t-test compares and when to use it; identify whether your data calls for one
- 65-77Submit statistics practice with calculations shown
- 77-80Exit check: what does a large standard deviation tell you about your data?
- • Yesterday you collected your data. Today you start making sense of it.
- • Mean and standard deviation tell you what happened on average and how consistent your trials were.
- • A t-test tells you whether the difference between your two conditions is real or just noise.
- • Statistics fluency (WebXam 072125 data-analysis and Molecular Technology strands) requires you to show your work, not just a number.
- 1Calculate the mean of each condition in your dataset.
- 2Calculate the standard deviation to describe spread.
- 3Explain what a t-test compares and when to use it.
- 4Identify whether your data would call for a t-test.
- 5Submit your statistics practice with calculations shown.
- • You can compute mean and standard deviation correctly.
- • You can explain the purpose of a t-test.
- • How to compute the mean and standard deviation for a dataset by hand or in a spreadsheet.
- • What a t-test compares and the specific circumstances that call for it.
- • Why standard deviation tells you something about data reliability that the mean alone cannot.
Your PLTW work today
Experimental vs observational studies, sample size, graphing, mean, SD, t-test purpose. · Mean, SD, t-test
Day 4 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.
Do this: Open Problem 2 in your myPLTW course shell and locate the statistics or data-analysis activity to review the calculation format and t-test guidance.
Mark the statistics practice activity complete in your tracker after submitting your work.
The raw data table is done; by end of today your mean and SD calculations for each condition and a written t-test explanation should be submitted.
Statistics practice submission with mean and standard deviation calculated for each condition and a written t-test explanation.
All PLTW activities are completed inside the PLTW course environment — this page only gives direction. Submit producibles on Schoology.
Today's PLTW tracker
Check things off as you work, then submit. This tells Mr. Mendoza how you're doing so he can help the class. It does not replace turning in your producible on Schoology.
Use the code Mr. Mendoza gave you, not your name. Saved on this device.
Experimental vs observational studies, sample size, graphing, mean, SD, t-test purpose. · Mean, SD, t-test
Open Problem 2 in your myPLTW course shell and locate the statistics or data-analysis activity to review the calculation format and t-test guidance.
The raw data table is done; by end of today your mean and SD calculations for each condition and a written t-test explanation should be submitted.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Compute the mean and standard deviation and explain the purpose of a t-test for your data.
- Calculate the mean of each condition in your dataset.
- Calculate the standard deviation to describe spread.
- Explain what a t-test compares and when to use it.
- Identify whether your data would call for a t-test.
- Submit your statistics practice with calculations shown.
Data table: Statistics practice: mean and standard deviation calculated for each condition with steps shown, plus a written explanation of what a t-test compares and whether it applies to the data.
Submit on SchoologyUpload by 11:29 PM for full credit.
| Task | Who |
|---|---|
| Calculate the mean of each condition in your dataset. | _______ |
| Calculate the standard deviation to describe spread. | _______ |
| Explain what a t-test compares and when to use it. | _______ |
| Identify whether your data would call for a t-test. | _______ |
| Submit your statistics practice with calculations shown. | _______ |
Working solo? Put your own name in "Who" for every row.
- You can compute mean and standard deviation correctly.
- You can explain the purpose of a t-test.
Teacher-posted resources
Classroom documents for this lesson. Ones marked “Open the file” open right here; the rest are posted in Schoology. Use the label on each card to choose the right move.
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Human physiology data and research design by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology; keywords:physiology, research design. Score 142. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Human physiology data and research design by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology; keywords:physiology, research design. Score 142. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Human physiology data and research design by path:Biomedical-Innovations/Problem-2_Human-Physiology/00_Problem-Overview; keywords:physiology, research design. Score 138. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
How to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
Lab & supplies
WebXam practice
Cumulative WebXam review
A quick mixed-review pulling questions from earlier units plus today, so the WebXam material stays fresh.
Where this leads — careers
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
What to do if you were absent
Today is individual PLTW work, so do exactly what we did in class, from home: complete the same PLTW target above, then submit your Data table.
Open Schoology (CMSD) and keep goingHow to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Khan Academy Statistics and Probability- CompleteEvery required part of the artifact is present, nothing left blank.
- AccurateThe science and the data are correct and match the evidence.
- Scientific reasoningYou explain your claim with evidence and reasoning (CER), not just an answer.
- Professional communicationClear, organized, labeled, and written the way a clinician or scientist would.
- SubmittedTurned in the right way (Schoology for routine work) and confirmed.
Drop your Mon, Mar 1, 2027 · Mean, SD, t-test here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).
Upload a project