Company: InfoEdge Data Scientist mcq
Difficulty: medium
A non-zero vector that can be changed at most by its scalar factor after the application of linear transformations is called:
X is the sum of the squares of k independent standard normal random variables. What's the distribution of X?
In rolling a dice 300 times we get 54 ones, 46 twos, 54 threes, 46 fours, 50 fives and 36 sixes. What is the test statistic value for the goodness of fit test?
What is the correct formula for detecting outliers using the Inter Quartile Range (IQR)?
What is IQR?
In a normal distribution, the percentage of values that lie within one, two, three standard deviations of the mean respectively are:
Which of the following is NOT an AXIOM of probability?
Which of the following is NOT a property of the Poisson process?
What does Z score signify?
A fair dice is thrown twice. What is the probability that '5' will occur at least once?
Latent Dirichlet Allocation is a generative model.
We are implementing decision tree, if there are very large number of classes in a categorical variable, which measure is more preferable?
Which of the following is/are assumption(s) of the Naive Bayes Algorithm?
If you suspect your model to be overfitting, which of the following is NOT a preferred way to try to reduce overfitting?
A deep decision tree with pure leaf nodes is not likely perform well on unseen data because of:
A decision tree is likely to be more prone to:
Linear regression can be optimized using:
You are given 20 data points in a cartesian coordinate system. PCA gives nearly identical eigen values. What could lead to this?
Which of the following is NOT TRUE related to binary classification?
Instead of trying to achieve absolute zero error, we set a metric called Bayes error. Which of the following options could be a good reason for using Bayes error?
In which neural net architecture does weight sharing occur?
Which of the following Neural network applies identity mapping (shortcut connections)?
While using Bidirectional RNN for text language translation, the input may be best passed as:
State whether the statement: 'Neural networks can approximate any function.' is True or False.
Which of the following architectures may be more suitable for learning time-series data compared to the rest?
Which of the following is NOT used for preventing overfitting in neural networks?
Which of the following is FALSE about Radial Basis Function Neural Network?
Which one of the following is not a standard pooling technique in CNNs?
We are most likely to find a global minima of an objective function if the objective function is:
Pandas dataframes of Python, Index values must be:
Which of the following SQL command shall display all the unique values in a column called 'data1' in a SQL table MY_TABLE?
Which is the correct way to get the number of unique values in a column 'C' in a Pandas dataframe df?
Which of the following is FALSE about 'dictionary' data type in Python?
Data type 'Lists' in Python are:
In Python command prompt, if you type 3**2**3, you may get which of the below answers?
Which of the following methods would compute the frequency of elements in a given column of a Pandas dataframe?
The Numpy slicing operator [:-4] would do the following:
Which of the below command may be used to compute Z (intersection) from lists X and Y?
10 men and 12 women images are there. A model classifies 14 women where 8 are actual women and 6 are men. Precision and recall?