Data Analysis MCQs with answers Page - 3

Here, you will find a collection of MCQ questions on Data Analysis. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which measure is most affected by extreme values in a dataset?

  • (A) Mean
  • (B) Median
  • (C) Mode
  • (D) Standard deviation

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Q. What does a correlation coefficient close to +1 indicate?

  • (A) Weak negative correlation
  • (B) Strong positive correlation
  • (C) No correlation
  • (D) Strong negative correlation

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Q. Which programming language is most commonly used for data analysis?

  • (A) Java
  • (B) C++
  • (C) Python
  • (D) PHP

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Q. What is the main purpose of data cleaning?

  • (A) To build models
  • (B) To remove outliers only
  • (C) To prepare data for analysis
  • (D) To visualize data

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Q. Which of the following is NOT a type of data visualization?

  • (A) Histogram
  • (B) Pie chart
  • (C) Box plot
  • (D) Text mining

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Q. In a normal distribution, what percentage of data lies within one standard deviation from the mean?

  • (A) 68%
  • (B) 50%
  • (C) 95%
  • (D) 99.7%

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Q. What is the median of the dataset: [3, 5, 7, 9, 11]?

  • (A) 5
  • (B) 7
  • (C) 9
  • (D) 11

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Q. Which tool is NOT typically used for data analysis?

  • (A) Microsoft Excel
  • (B) Tableau
  • (C) Photoshop
  • (D) R

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Q. What type of variable is 'Age'?

  • (A) Categorical
  • (B) Ordinal
  • (C) Nominal
  • (D) Numerical

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Q. Which statistical method is used to predict future values based on past data?

  • (A) Descriptive analysis
  • (B) Regression analysis
  • (C) Classification
  • (D) Clustering

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