NPTEL Data Analytics with Python Week 1 Assignment Solution
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Data analytics is best defined as:
- A) Collection of large volumes of data
- B) Storage of structured and unstructured data
- C) Scientific process of transforming data into insights for decision-making
- D) Visualization of data using graphs
Which of the following represents the correct order of data analytics types based on workflow?
- A) Predictive → Descriptive → Prescriptive → Diagnostic
- B) Descriptive → Diagnostic → Predictive → Prescriptive
- C) Diagnostic → Descriptive → Prescriptive → Predictive
- D) Descriptive → Predictive → Diagnostic → Prescriptive
Under which level of measurement does the variable “height of a person” fall?
- A) Nominal
- B) Ordinal
- C) Interval
- D) Ratio
In Python (Pandas), which command is used to select rows by integer position?
- A) df.loc[]
- B) df.select()
- C) df.iloc[]
- D) df.index[]
Which of the following is NOT a benefit of using Jupyter Notebook?
- A) Easy documentation
- B) User-friendly interface
- C) Faster hardware execution
- D) Web-based code editing
The arithmetic mean is NOT appropriate for which type of data?
- A) Interval
- B) Ratio
- C) Ordinal
- D) Nominal
If a distribution is positively skewed, which relationship holds true?
- A) Mean < Median < Mode
- B) Mode < Median < Mean
- C) Mean = Median = Mode
- D) Median < Mean < Mode
Which measure is used to compare relative dispersion between two datasets?
- A) Variance
- B) Standard deviation
- C) Range
- D) Coefficient of variation
A dataset has a mean of 50 and a standard deviation of 10. According to the Empirical Rule, approximately what percentage of observations lie between 30 and 70?
- A) 68%
- B) 75%
- C) 95%
- D) 99.7%
Consider the following Python code:
x = [10, 20, 30]
y = x
y.append(40)
print(len(x))
- A) 3
- B) 4
- C) Error
- D) 1
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