**AI Statistics Python by SkillUp Exam Answers**

**Exam 4.1 – 3 Questions**

**Question 1: Cognos is a business intelligence performance management tool for IBM that allows technical and non-technical employees in any company to,**

- write code in any language
**create interactive dashboards**- write AI code
- create charts and graphs

**Question 2: Cognos can only accept data from which company ,**

- Microsoft
- Oracle
- NCR Teradata
- SAP
**All of the above**

**Question 3: Select all of the advantages of Cognos.**

- It’s free
**Data exploration****Data sharing**- Does not require coding
**Data prparation**

**Exam 4.2 – 5 Questions**

**Question 1: A simple mathematical average of a set of two or more numbers is calles what?**

- Median
- Mode
- Average
**Mean**

**Question 2: The middle number in a data set is called the,**

**Median**- Mode
- Average
- Mean

**Question 3: A collection of information that is divided into groups is called,**

**Categorical Data**- Quantitative data
- Median data
- Counted data

**Question 4: Determinung the strengths of the relationship between a dependent variable and an independent variable you would use,**

- Python code
- Root Mean Square Error
**Linear Regression**- SPSS

**Question 5: Which of the following are considered Business Intelligence Tools?**

**Tableau**- Visio
**Power BI****SPSS****Excel**

**Final Exam – 10 Questions**

**Question 1: What are the advantages of IBM Cognos?**

**Data Preparation****Data Sharing**- Does not require coding
**Data Exploration**

**Question 2: A statistical measure that determines the middle value of a dataset listed in ascending order is called**

- Mean
- Mode
**Median**- Standard Deviation

**Question 3: Categorical data are measures of values or counts and are expressed as numbers, both whole numbers and numbers with decimals.**

- True
**False**

**Question 4: Which of the following are the examples of Categorical Data?**

**gender**- a jar of coffee beans
**seasons****Proficiency level**

**Question 5: Probability is used extensively in AI to develop machine learning models which will predict the outcome based on probability.**

- False
**True**

**Question 6: What does the above graph represent?**

**Positive Correlation**- Negative Correlation
- No Correlation

**Question 7: Two Statistically Dependent random variables X and Y are said to be negatively dependent if the inequalities are reversed**

**True**- False

**Question 8: Which of the following are Statistical Analysis tools?**

**SPSS**- Visio
- Axure
**Tableau**

**Question 9: 48.24, 87.04, 34.98, 25.61, 90.08**

**Calculate the mean of the following (upto 2 decimal places)**

**57.19**

**Question 10: 10.97, 12.34, 23.32, 23.12, 16.96, 23.46, 21.21, 16.39**

**Calculate the standard deviation of the following (upto 2 decimal places)**

**4.71**