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September 27, 2023

What is Data Reduction? Provide a list of strategies associated with it? Explain one of them with an example?

4 Questions related to Data Mining and Data Warehouse

Pls read carefully and answer them correctly.

Also, avoid plagiarism.

Requirements: As stated

Question One

Apply the chi-square for this scenario:

An opinion poll surveyed a simple random sample of 1000 students. Respondents were classified by gender (male or female) and asked if she/he smoked. Results are shown in the contingency table below:

Is there any relationship between the gender type and smoking? Use a 0.05 level of significance.

Note: calculate the expected value, then calculate the chi-square.

Answer:

Question Two

What is Data Reduction? Provide a list of strategies associated with it? Explain one of them with an example?

Answer:

Question Three

Briefly compare the features of following concepts: Snowflake schema, fact constellation and star schema. Support your answer by illustrating examples.

Answer:

Question Four

Apply the Apriori algorithm for following Database to find the which itemset are satisfy the minimum support = 3, then explain or highlight the result

Answer:

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