Python Coding challenge - Day 736| What is the output of the following Python Code?

 

Code Explanation:

1. Importing the Module

import statistics

We import the statistics module from Python’s standard library.

This module provides functions to calculate statistical measures like mean, median, mode, variance, etc.

2. Creating the Data List

data = [2, 4, 4, 4, 5, 5, 7]

A list data is created with numbers.

This list will be used to calculate mean, median, and mode.

Notice that 4 occurs three times, 5 occurs two times, others occur once.

3. Calculating the Mean

mean_val = statistics.mean(data)

statistics.mean(data) calculates the average value of the list.

Formula: sum of all numbers ÷ count of numbers

Sum = 2 + 4 + 4 + 4 + 5 + 5 + 7 = 31

Count = 7

Mean = 31 ÷ 7 ≈ 4.428571

4. Calculating the Median

median_val = statistics.median(data)

statistics.median(data) finds the middle value when the list is sorted.

Sorted list = [2, 4, 4, 4, 5, 5, 7]

Middle element (4th element, since list length = 7) = 4

So, median = 4.

5. Calculating the Mode

mode_val = statistics.mode(data)

statistics.mode(data) returns the most frequently occurring number.

Here, 4 appears 3 times, more than any other number.

So, mode = 4.

6. Printing the Results

print(mean_val, median_val, mode_val)

Prints all three results together:

4.428571428571429 4 4

Final Output:

4.428571428571429 4 4

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