AB InBev India Data Scientist Intern Interview Questions and Answers

The 7 P's of Marketing are key elements in a marketing strategy.

• Product - what you are selling

• Price - how much it costs

• Place - where it is sold

• Promotion - how you market it

• People - who are your target customers

• Process - how the product is delivered

• Physical Evidence - tangible aspects of the product/service

Autocorrelation is a statistical concept that measures the relationship between a variable's current value and its past values.

• Autocorrelation is the correlation of a signal with a delayed copy of itself.

• It is used to detect patterns or trends in time series data.

• Positive autocorrelation indicates a positive relationship between current and past values, while negative autocorrelation indicates a negative relationship.

• F...read more

Linear regression assumptions include linearity, independence, homoscedasticity, and normality.

• Assumption of linearity: The relationship between the independent and dependent variables is linear.

• Assumption of independence: The residuals are independent of each other.

• Assumption of homoscedasticity: The variance of the residuals is constant across all levels of the independent variables.

• Assumption of normality: The resid...read more

P value is a measure used in hypothesis testing to determine the significance of the results.

• P value is the probability of obtaining results at least as extreme as the observed results, assuming the null hypothesis is true.

• A small P value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, leading to its rejection.

• A large P value (> 0.05) suggests weak evidence against the null hypothesis, lead...read more

Methods for evaluating machine learning models include accuracy, precision, recall, F1 score, ROC curve, and confusion matrix.

• Accuracy: measures the proportion of correct predictions out of the total predictions made by the model.

• Precision: measures the proportion of true positive predictions out of all positive predictions made by the model.

• Recall: measures the proportion of true positive predictions out of all actual...read more

Standard deviation is a measure of the amount of variation or dispersion of a set of values.

• Standard deviation is calculated as the square root of the variance.

• It indicates how spread out the values in a data set are around the mean.

• A low standard deviation means the values are close to the mean, while a high standard deviation means the values are more spread out.

• For example, in a data set of test scores, a high stand...read more

I regularly review and analyze data to track performance and make informed decisions.

• I track key performance indicators (KPIs) to monitor progress

• I use data visualization tools like Excel or Tableau to analyze trends

• I conduct regular audits to ensure data accuracy

• I collaborate with team members to gather and interpret data

• I attend training sessions to stay updated on data analysis techniques