
review topic 1-4
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Professional Development
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Professional Development
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Nguyen Bich Ngoc
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the logical process of data analytics, which of the following correctly represents the sequence of three analytical levels?
Predictive → Prescriptive → Descriptive
Descriptive → Predictive → Prescriptive
Descriptive → Prescriptive → Predictive
Prescriptive → Predictive → Descriptive
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main goal of Descriptive Analytics?
A. Forecasting future trends
B. Providing recommendations for decision-making
C. Summarizing and describing existing data
D. Identifying causal relationships
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of question does Predictive Analytics aim to answer?
What happened?
Why did it happen?
What will happen?
What should we do?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The main question addressed by Prescriptive Analytics is:
What should be done?
What happened?
Why did it happen?
What is likely to happen?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of Statistical Inference, what does 'point estimation' mean?
Estimating a range of values that contain the population parameter
Calculating the sample mean value
Estimating the population parameter using a single value from the sample
Testing a statistical hypothesis
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does 'interval estimation' differ from 'point estimation'?
A. It is based on larger samples
B. It provides an estimated range (confidence interval) with upper and lower bounds
C. It does not rely on probability
D. It applies only to categorical data
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of hypothesis testing in statistical inference?
Comparing two sample means
Testing hypotheses about population parameters based on sample data
Calculating the probability of error
Drawing frequency distributions
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