Sample interview questions: Can you explain the process you follow to analyze and interpret data obtained from experiments?
Sample answer:
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Data Preparation and Cleaning:
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Organize and clean the raw data to ensure its accuracy and consistency.
- Handle missing values appropriately (e.g., imputation, exclusion).
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Transform and normalize the data if necessary (e.g., standardization, rescaling).
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Exploratory Data Analysis (EDA):
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Examine the data distribution, central tendencies, and variability using descriptive statistics.
- Create visualizations (e.g., histograms, scatterplots, boxplots) to identify patterns and outliers.
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Conduct preliminary statistical tests to assess normality, homogeneity of variances, and outliers.
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Hypothesis Testing:
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Formulate specific, testable hypotheses based on the research question and theoretical framework.
- Select appropriate statistical tests based on the type of data and research design (e.g., t-tests, ANOVA, regression analysis).
- Run the statistical tests and interpret the results, including p-values, effect sizes, and confidence intervals.
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Adjust for multiple comparisons if necessary (e.g., Bonferroni correction, Holm-Bonferroni method).
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Effect Size Estimation:
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Calculate effect sizes (e.g., Cohen’s d, r, f²) to quantify the magnitude of the obse… Read full answer
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