Data Science - Skill Development Course

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Department *

Year *

10th Percentage *

12th Percentage *

UG CGPA til 4th Sem *

No.of. Arrear count *

If f(x) = 3x^2 - 5x + 2, then f(4) is:

1 point

If (x−2)(x+3)=0, the roots are:

1 point

−3 and 2

3 and −2

2 only

−3 only

If y=2x+5, then when x increases by 4, y increases by:

1 point

A coin is tossed 3 times. Probability of exactly 2 heads is:

1 point

1/8

3/8

1/4

1/2

Mean of 10 numbers is 15. If one number 25 is added, new mean is:

1 point

15.5

Standard deviation is the:

1 point

Square of variance

Square root of variance

Twice the variance

Variance – Mean

Median of the dataset {3, 7, 9, 12, 15} is:

1 point

Dot product of vectors (2,3) and (4,1) is:

1 point

Derivative of x^3 is:

1 point

3x^2

x^2

Integral of 2x dx

1 point

x² + C

2x² + C

x³ + C

x + C

Next number in: 5, 11, 23, 47, ?

1 point

If a dataset is heavily right-skewed, the measure most affected is:

1 point

Mean

Median

Mode

Variance

A line graph shows a company’s revenue rising steadily. This indicates:

1 point

Negative growth

No trend

Positive trend

Sudden fluctuations

x = [1, 2, 3]

print(x[::-1])

1 point

[1, 2, 3]

[3, 2, 1]

[2, 3, 1]

Error

Which library is used for data manipulation?

1 point

Matplotlib

Pandas

Seaborn

SciPy

If the dataset is: 2, 4, 4, 4, 5, 5, 7, 9
The mode is:

1 point

Feature scaling is needed because:

1 point

To reduce memory

To normalize features with different units

To convert data to strings

To remove duplicates

NLP stands for:

1 point

Natural Language Processing

Natural Logic Programming

Non-linear Programming

Neural Language Prediction

A confusion matrix is used to evaluate:

1 point

Clustering

Classification

Regression

Feature extraction

In KNN, “K” represents:

1 point

Number of clusters

Number of nearest neighbors

Number of iterations

Kernel size

Which of the following sensors is MOST likely to generate continuous (analog) data useful for machine learning?

1 point

Push button

Temperature sensor (LM35)

Limit switch

Keyboard

Which machine learning method is suitable for predicting equipment failure based on past sensor data? *

1 point

Clustering

Logistic Regression

Sorting

Encryption

A mechanical engineer records the force applied every second during a tensile test. This type of data is called: *

1 point

Categorical

Time-Series

Binary

Nominal

What is the main purpose of normalization (feature scaling) in ML? *

1 point

To improve image quality

To ensure all features are on a similar range

To reduce noise

To remove missing values

A 3×2 matrix can be multiplied with which of the following? *

1 point

2×3 matrix

3×3 matrix

2×2 matrix

4×1 vector

For predicting the remaining useful life (RUL) of a machine, which type of learning is used? *

1 point

Supervised learning

Unsupervised learning

Reinforcement learning

Deepfake learning

What is the value of 45% of 240? *

1 point

100

108

116

If the ratio of boys to girls is 5:3 and total students = 80, number of girls = *

1 point

Which figure comes next?

Pattern increases by +3, +5, +7…
2, 5, 10, 17, ?

1 point

If all engineers are students and some students are gamers, which is true? *

1 point

All gamers are engineers

Some engineers may be gamers

No engineer is gamer

Engineers and gamers are same

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