Data Science

Which of the following function gives information about top level data?

• head

• tail

• summary

• none of the mentioned

Which of the following is not a machine learning algorithm?

• SVG

• SVM

• Random forest

• None of the mentioned

1.         Which of the following is a common error measure?

• Sensitivity

• Median absolute deviation

• Specificity

• All of the mentioned

Which of the following is correct use of cross validation?

• Selecting variables to include in a model

• Comparing predictors

• Selecting parameters in prediction function

• All of the mentioned

Which of the following is a categorical outcome?

• RMSE

• RSquared

• Accuracy

• All of the mentioned

For k cross-validation, larger k value implies more bias

• True

• False

Which of the following function is used for determining missing values?

• any

• all

• is

• all of the mentioned

Point out the correct statement

• Descriptive analysis is first kind of data analysis performed

• Descriptions can be generalized without statistical modelling

• Description and Interpretation are same in descriptive analysis

• None of the mentioned

Which of the following allows you to find the relationship you didn’t about?

• Inferential

• exploratory

• causal

• None of the mentioned

Which of the following uses data on some object to predict values for other object?

• Inferential

• Exploratory

• Predictive

• None of the mentioned