# Applied Statistics for Data Analytics **URL:** https://community.deeplearning.ai/c/course-q-a/data-analytics-professional-certificate/dag-course-2/508.md [Latest](https://community.deeplearning.ai/latest.md) · [Categories](https://community.deeplearning.ai/categories.md) · [Tags](https://community.deeplearning.ai/tags.md) --- ## [Applied Statistics for Data Analytics Module 2 (Making Decisions with Distributions)](https://community.deeplearning.ai/t/applied-statistics-for-data-analytics-module-2-making-decisions-with-distributions/894941)
**Author:** [@Joanne\_Guo](https://community.deeplearning.ai/u/Joanne_Guo)\ **Replies:** 1\ **Last updated:** [September 4, 2026, 11:54am UTC](https://community.deeplearning.ai/t/applied-statistics-for-data-analytics-module-2-making-decisions-with-distributions/894941 "2026-09-04T11:54:04Z")
For the lesson on Making Decisions with Distributions, it does not show the methods used to answer the businesss questions especially if the distribution is not normal. Grateful if you can enlighten on how we can answer … --- ## [C2M4 - Graded Lab - Exercise 4 (Step 4) - Possible Issue : the given p-value Formula in Cell E15 may be Incorrect?](https://community.deeplearning.ai/t/c2m4-graded-lab-exercise-4-step-4-possible-issue-the-given-p-value-formula-in-cell-e15-may-be-incorrect/802914)
**Author:** [@Christophe\_Lancien](https://community.deeplearning.ai/u/Christophe_Lancien)\ **Replies:** 6\ **Last updated:** [July 4, 2026, 4:53am UTC](https://community.deeplearning.ai/t/c2m4-graded-lab-exercise-4-step-4-possible-issue-the-given-p-value-formula-in-cell-e15-may-be-incorrect/802914 "2026-07-04T04:53:15Z")
Hi, I’d like to check whether there’s a possible mistake in the Graded Lab – Exercise 4 (Cut proportions), specifically Step 4. :thinking: What I noticed: In cell E15, the provided formula for calculating the p-value … --- ## [Presentation Slides Download](https://community.deeplearning.ai/t/presentation-slides-download/888580)
**Author:** [@claudia.a.hurtado](https://community.deeplearning.ai/u/claudia.a.hurtado)\ **Replies:** 1\ **Last updated:** [February 9, 2026, 7:21pm UTC](https://community.deeplearning.ai/t/presentation-slides-download/888580 "2026-02-09T19:21:15Z")
Are we able to download the presentation slides for the Applied Statistics for Data Analytics? I found that very helpful when I did the Foundational course of the program. Thank you, Claudia --- ## [Capstone: incorrect P valus?](https://community.deeplearning.ai/t/capstone-incorrect-p-valus/882565)
**Author:** [@Miyato22](https://community.deeplearning.ai/u/Miyato22)\ **Replies:** 3\ **Last updated:** [November 3, 2025, 1:15pm UTC](https://community.deeplearning.ai/t/capstone-incorrect-p-valus/882565 "2025-11-03T13:15:15Z")
In this proble, my p value is getting 1.71E-45 in the google sheet, after converting to number format, it gets 0. I check the T.test formula and I can’t find which part is wrong. Can you help me find the problem of my… --- ## [Demo: Spreadsheet simulation - normal](https://community.deeplearning.ai/t/demo-spreadsheet-simulation-normal/882129)
**Author:** [@VeronikaS](https://community.deeplearning.ai/u/VeronikaS)\ **Replies:** 1\ **Last updated:** [October 26, 2025, 1:27am UTC](https://community.deeplearning.ai/t/demo-spreadsheet-simulation-normal/882129 "2025-10-26T01:27:14Z")
Hi, I am currently taking the Applied Statistics for Data Analysis course. It seems that in the video “Demo: Spreadsheet Simulation - Normal” (Module 2), the section where the instructor regenerates the random sample ma… --- ## [How do we know that in what types of sample data we use histogram and column chart?](https://community.deeplearning.ai/t/how-do-we-know-that-in-what-types-of-sample-data-we-use-histogram-and-column-chart/877844)
**Author:** [@Anish\_Das123](https://community.deeplearning.ai/u/Anish_Das123)\ **Replies:** 2\ **Last updated:** [August 28, 2025, 5:07pm UTC](https://community.deeplearning.ai/t/how-do-we-know-that-in-what-types-of-sample-data-we-use-histogram-and-column-chart/877844 "2025-08-28T17:07:34Z")
1.Apart from examples in courses where are the other use? 2.How to insert mu symbol in spreadsheets? --- ## [How to validate t.test function results?](https://community.deeplearning.ai/t/how-to-validate-t-test-function-results/877761)
**Author:** [@Anish\_Das123](https://community.deeplearning.ai/u/Anish_Das123)\ **Replies:** 9\ **Last updated:** [August 26, 2025, 2:38pm UTC](https://community.deeplearning.ai/t/how-to-validate-t-test-function-results/877761 "2025-08-26T14:38:12Z")
Inside the T.Test function we don’t have any argument of choosing the level of significance. Let’s think here we have 0.01 but lets say we have 0.05,0.10 etc. The answer should be different or not. --- ## [How to assume the null hypothesis in this questions](https://community.deeplearning.ai/t/how-to-assume-the-null-hypothesis-in-this-questions/877753)
**Author:** [@Anish\_Das123](https://community.deeplearning.ai/u/Anish_Das123)\ **Replies:** 9\ **Last updated:** [August 26, 2025, 2:31pm UTC](https://community.deeplearning.ai/t/how-to-assume-the-null-hypothesis-in-this-questions/877753 "2025-08-26T14:31:04Z")
In previous question we already have value with respect null can used. But how to assume the hypothesis here. --- ## [The Prompt for Simulation in "Sampling distributions & the central limit theorem" Module 3?](https://community.deeplearning.ai/t/the-prompt-for-simulation-in-sampling-distributions-the-central-limit-theorem-module-3/877186)
**Author:** [@Sotnik](https://community.deeplearning.ai/u/Sotnik)\ **Replies:** 3\ **Last updated:** [August 25, 2025, 11:35am UTC](https://community.deeplearning.ai/t/the-prompt-for-simulation-in-sampling-distributions-the-central-limit-theorem-module-3/877186 "2025-08-25T11:35:46Z")
There is a simulation (using Claude as I presume) in a lesson “Sampling distributions & the central limit theorem” Module 3. Can I have the Prompt for this simulation? --- ## [Is this close enough?](https://community.deeplearning.ai/t/is-this-close-enough/873708)
**Author:** [@Anish\_Das123](https://community.deeplearning.ai/u/Anish_Das123)\ **Replies:** 3\ **Last updated:** [August 17, 2025, 1:17am UTC](https://community.deeplearning.ai/t/is-this-close-enough/873708 "2025-08-17T01:17:50Z")
is the value close enough to 68,95,99.7. Apart from last value others have larger deviation. Or am I doing something wrong. --- ## [How to know which should we use in denominator in calculating the probabilities?](https://community.deeplearning.ai/t/how-to-know-which-should-we-use-in-denominator-in-calculating-the-probabilities/873076)
**Author:** [@Anish\_Das123](https://community.deeplearning.ai/u/Anish_Das123)\ **Replies:** 4\ **Last updated:** [August 15, 2025, 3:43pm UTC](https://community.deeplearning.ai/t/how-to-know-which-should-we-use-in-denominator-in-calculating-the-probabilities/873076 "2025-08-15T15:43:48Z")
What should be the denominator in this question? As we know to calculate probability we need no. of favorable outcomes/ total no. of outcomes. For first two cases, it is clear to choose the denominator but 3rd one which … --- ## [Political Polls: Good/Bad/Ugly examples?](https://community.deeplearning.ai/t/political-polls-good-bad-ugly-examples/853171)
**Author:** [@kanwalinder](https://community.deeplearning.ai/u/kanwalinder)\ **Replies:** 1\ **Last updated:** [July 17, 2025, 4:47pm UTC](https://community.deeplearning.ai/t/political-polls-good-bad-ugly-examples/853171 "2025-07-17T16:47:58Z")
I would like to go deeper into Module 1 on Surveys, Populations, Samples, Bias, etc. by looking at examples of good/bad/ugly ways to political polls. The polls don’t have to be current though it will be fun to compare p… --- ## [Module 4 Assignment: Analyzing Car CO₂ Emissions](https://community.deeplearning.ai/t/module-4-assignment-analyzing-car-co-emissions/834185)
**Author:** [@Dut\_Manut\_Ayiei\_Dut](https://community.deeplearning.ai/u/Dut_Manut_Ayiei_Dut)\ **Replies:** 1\ **Last updated:** [June 16, 2025, 9:55am UTC](https://community.deeplearning.ai/t/module-4-assignment-analyzing-car-co-emissions/834185 "2025-06-16T09:55:18Z")
this code is generating error. can someone help me correct this code please? # 1. Filter the data compact = df\[df\[‘Vehicle class’\] == ‘Compact’\] mid\_size = df\[df\[‘Vehicle class’\] == ‘Mid-size’\] 2… --- ## [Question about Calculation User Ratings (LLM Example)](https://community.deeplearning.ai/t/question-about-calculation-user-ratings-llm-example/801517)
**Author:** [@todd3](https://community.deeplearning.ai/u/todd3)\ **Replies:** 2\ **Last updated:** [April 17, 2025, 9:52am UTC](https://community.deeplearning.ai/t/question-about-calculation-user-ratings-llm-example/801517 "2025-04-17T09:52:11Z")
In the example with the LLM, where you are calculating the proportion of users would rate the app 5 starts, shouldn’t you be looking at all users who downloaded the app, not just the ones who rated the app? My interpret… --- ## [Hypothesis Testing: P-value Interpretation](https://community.deeplearning.ai/t/hypothesis-testing-p-value-interpretation/795595)
**Author:** [@giangnh](https://community.deeplearning.ai/u/giangnh)\ **Replies:** 15\ **Last updated:** [April 6, 2025, 2:48am UTC](https://community.deeplearning.ai/t/hypothesis-testing-p-value-interpretation/795595 "2025-04-06T02:48:13Z")
Statistical significance implies the difference observed is likely not due to random variability. I wonder if a test result in a p-value of 7%, can we say that there’s a 7% that the difference occured due to chance inste… --- ## [Q9, Graded Lab, Module 3](https://community.deeplearning.ai/t/q9-graded-lab-module-3/792032)
**Author:** [@texnh](https://community.deeplearning.ai/u/texnh)\ **Replies:** 7\ **Last updated:** [March 28, 2025, 2:27pm UTC](https://community.deeplearning.ai/t/q9-graded-lab-module-3/792032 "2025-03-28T14:27:08Z")
Q9: The jeweler asks whether at least 65% of the diamonds in the new shipment will be premium or ideal cut. Based on the confidence interval, which of the following will support your response? - The confidence interval…