Data Analysis MCQs with answers Page - 4

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. A bar chart is best suited for visualizing what type of data?

  • (A) Continuous data
  • (B) Categorical data
  • (C) Time-series data
  • (D) Correlated data

A

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Q. Which of these is NOT a measure of central tendency?

  • (A) Mean
  • (B) Variance
  • (C) Median
  • (D) Mode

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Q. Outliers can have a large effect on which of the following?

  • (A) Mode
  • (B) Median
  • (C) Mean
  • (D) All of the above equally

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Q. Which library is commonly used for data manipulation in Python?

  • (A) Matplotlib
  • (B) Seaborn
  • (C) Pandas
  • (D) TensorFlow

A

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Q. Which of the following best describes a histogram?

  • (A) Displays proportions of categories
  • (B) Shows the distribution of numerical data
  • (C) Compares different categories
  • (D) Shows time-series trends

A

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Q. Which of the following helps in identifying the spread of data?

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

A

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Q. What is the term for missing values in a dataset?

  • (A) Nulls
  • (B) Errors
  • (C) Labels
  • (D) Variables

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Q. Which method is used to reduce the dimensions of large datasets?

  • (A) Regression
  • (B) Normalization
  • (C) PCA (Principal Component Analysis)
  • (D) Standardization

A

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Q. Which term describes the process of transforming raw data into meaningful insights?

  • (A) Data cleaning
  • (B) Data transformation
  • (C) Data analysis
  • (D) Data mining

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Q. Which visualization is best for showing parts of a whole?

  • (A) Line chart
  • (B) Bar chart
  • (C) Pie chart
  • (D) Scatter plot

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