Scalar operations on arrays in NumPy - Mini Project: Build & Apply

Scalar operations on arrays

📖 Scenario: Imagine you have a list of daily temperatures in Celsius for a week. You want to convert these temperatures to Fahrenheit using a simple formula. This project will help you practice how to perform scalar operations on arrays using NumPy.

🎯 Goal: You will create a NumPy array of temperatures in Celsius, define the conversion formula as a scalar operation, apply it to the array, and then display the converted temperatures in Fahrenheit.

📋 What You'll Learn

Create a NumPy array with exact temperature values

Define a scalar value for the conversion formula

Apply scalar operations to the NumPy array

Print the resulting array with converted temperatures

💡 Why This Matters

🌍 Real World

Converting temperature units is common in weather data analysis and scientific research.

💼 Career

Understanding scalar operations on arrays is fundamental for data manipulation and feature engineering in data science roles.

1

Create a NumPy array of temperatures in Celsius

Import the numpy library as np. Then create a NumPy array called temps_celsius with these exact values: 20, 22, 19, 24, 21, 23, 20.

NumPy

import numpy as np
# Create the NumPy array temps_celsius with the given values
# Your code here

Need a hint?

Use np.array([...]) to create the array with the exact temperature values.

2

Define scalar values for the conversion formula

Create two variables: multiplier set to 1.8 and offset set to 32. These will be used in the formula to convert Celsius to Fahrenheit.

NumPy

import numpy as np
temps_celsius = np.array([20, 22, 19, 24, 21, 23, 20])
# Define multiplier and offset for conversion
# Your code here

Need a hint?

Assign the exact values to multiplier and offset as floats or integers.

3

Apply scalar operations to convert Celsius to Fahrenheit

Create a new NumPy array called temps_fahrenheit by multiplying temps_celsius by multiplier and then adding offset. Use the exact variable names.

NumPy

import numpy as np
temps_celsius = np.array([20, 22, 19, 24, 21, 23, 20])
multiplier = 1.8
offset = 32
# Calculate temps_fahrenheit using scalar operations
# Your code here

Need a hint?

Use the formula: Fahrenheit = Celsius * multiplier + offset.

4

Print the converted temperatures in Fahrenheit

Print the temps_fahrenheit array to display the converted temperatures.

NumPy

import numpy as np
temps_celsius = np.array([20, 22, 19, 24, 21, 23, 20])
multiplier = 1.8
offset = 32
temps_fahrenheit = temps_celsius * multiplier + offset
# Print temps_fahrenheit
# Your code here

Need a hint?

Use print(temps_fahrenheit) to show the result.