Infosys Certified Data Science using Python Professional-Part1
Practice with real exam-pattern questions for Infosys Certified Data Science using Python Professional-Part1. Each question includes a detailed explanation to help you understand the concept, not just memorise the answer. Try 10 questions free — no login required.
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Join Premium10 Infosys Certified Data Science using Python Professional-Part1 practice questions with answers
Real Lex exam-pattern multiple-choice questions for the Infosys Certified Data Science using Python Professional-Part1 certification. Each question includes the correct answer. The full question bank is available to Premium members.
- Question 1
Which one of the following is not true of the poisson distribution?
- ✓
An event can occur any number of times during a time period.
Correct - B
The rate of occurrence is constant; that is, the rate does not change based on time
- C
Occurrences of event can be over time, distance, area or volume
- D
Total Area under the curve is equal to 1
- ✓
- Question 2
If x_norm and y_norm are two vectors, what is their dot product?
- ✓
A scalar
Correct - B
A vector
- C
A matrix
- D
It is always 0
- ✓
- Question 3
σ / sqrt of (n) is known by the term
- ✓
Sampling distribution
Correct - B
Standard deviation
- C
Standard Error
- D
Mean
- ✓
- Question 4
Apoorva is a data scientist at an automobile company. She performs a Shapiro-Wilk test on a sample of data that consists of buyers of a battery driven hatchback. She gets a p-value of 0.02. What does this signify?
- ✓
Data is normally distributed
Correct - B
Data is not normally distributed
- C
Data can be normally distributed
- D
None of the options
- ✓
- Question 5
Assume you are building a Simple Linear Regression on overall Population Data having 500 observations. The R-Square of the Model is 0.80. The Regression Sum of Squares (also called Explained Sum of Squares) is 100000 What is the Variance of Continuous Target Variable?
- ✓
200.0
Correct - B
15.81
- C
250.0
- D
14.4
- ✓
- Question 6
Guess the output of the following code
def rev_func(x,length):
print(x[length-1],end='' '')
rev_func(x,length-1)
x=[11, 12, 13, 14, 15]
rev_func(x,5)- ✓
The program runs fine without error
Correct - B
Program displays 15 14 13 12 11
- C
Program displays 11 12 13 14 15
- D
Program displays 15 14 13 12 11 and then raises an index out of range exception
- ✓
- Question 7
(1 – α) is called
- ✓
Power of a test
Correct - B
Type l Error
- C
The confidence level of the test
- D
Type 2 Error
- ✓
- Question 8
What is the probability of getting head 5 times if you toss a coin?
- ✓
1/32
Correct - B
1/16
- C
1/10
- D
1/5
- ✓
- Question 9
Of 37 men and 33 women, 36 are teetotalers (completely abstain from alcoholic beverages). Nine of the women are non-smokers and 18 of the men smoke but do not drink. 13 of the men and 7 of the women drink but do not smoke. How many, both drink and smoke?
- ✓
20.0
Correct - B
14.0
- C
34.0
- D
25.0
- ✓
- Question 10
Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
- ✓
5 divided by 4
Correct - B
2 divided by 4
- C
1 divided by 4
- D
None of the options
- ✓
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