Data Science & Its Application Quiuz

A fundamental part of the data scientist's toolkit is __________________

• Deep Learning

• Data Visualization

• Data Analysis

• Machine Learning

A ____________________ is the right choice for visualizing the relationship between two paired

sets of data

• Scatter Plot

• Line Chart

• Bar Chart

• Histogram

____________ refers to measures of how spread out our data is

• mean

• Central Tendency

• Dispersion

• median

The possible values of the correlation coefficient lies between

• 0 to -1

• -1 to 1

• -∞ to ∞

• 0 to ∞

The probability of rolling 2 dice to get a sum of 4 or 7 is:

• 1/4

• 1/6

• 1/12

• 1/8

Two tube lights are installed in a room. Probability of light A failing is 0.20 while the probability of light B failing is 0.15. What is the probability that both the lights are working on a given day? (final value is rounded off to 2 decimal places)

• 0.80

• 0.54

• 0.50

• 0.68

If the assumed hypothesis is tested for rejection considering it to be true is called?

• Simple Hypothesis

• Null Hypothesis

• Statistical Hypothesis

• Composite Hypothesis

The cost function is minimized by

• Linear regression

• Polynomial regression

• PAC learning

• Gradient descent

Gradient descent tries to _____________

• maximize the cost function

• minimize the cost function

• minimize the learning rate

• maximize the learning rate.

The technique used to compute the gradient based on a minibatch sampled from the larger dataset:

• Stochastic Gradient Descent

• Minibatch Gradient Descent

• Parameterized Gradient Descent