You have a NumPy array arr = np.array([2, 4, 6, 8]). You want to increase each element by 50% using scalar operations. Which code correctly achieves this?

hard📝 Application Q8 of 15

NumPy - Array Operations

You have a NumPy array arr = np.array([2, 4, 6, 8]). You want to increase each element by 50% using scalar operations. Which code correctly achieves this?

Aarr + 50

Barr * 1.5

Carr / 1.5

Darr - 0.5

Step-by-Step Solution

Solution:

Step 1: Understand increasing by 50%
Increasing by 50% means multiplying by 1.5 (100% + 50%).
Step 2: Evaluate each option
Only arr * 1.5 correctly increases each element by 50%.
Final Answer:
arr * 1.5 -> Option B
Quick Check:
Increase by 50% = multiply by 1.5 [OK]

Quick Trick: Multiply by 1.5 to increase values by 50% [OK]

Common Mistakes:

Adding 50 instead of 50%
Dividing instead of multiplying
Subtracting instead of adding

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More NumPy Quizzes

You have a NumPy array arr = np.array([2, 4, 6, 8]). You want to increase each element by 50% using scalar operations. Which code correctly achieves this?

Step 1: Understand increasing by 50%

Step 2: Evaluate each option

Final Answer:

Quick Check:

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