Tuples Exercises#

Section Title: Tuples Exercises

Question-1#

Create a tuple containing numbers greater than 5 from the given tuple below using a for loop.

mytuple = (3, 6, 2, 1.89, 1, 9, 5.5, 5, 7, 8, 1, -3, -5, 10.3)

Question-2#

Create a tuple containing numbers greater than 5 from the given tuple below using a for loop.

mytuple = (3, 6, 2, 1.89, 'h', 1, 9, 5.5, 5, 7, 8, True, 1, -3, -5, 'USA', 10.3, 'France')

Question-3#

Create a tuple by combining elements from the following tuples, one by one using a for loop.

numbers = (1,2,3,4,5)
letters = ('a', 'b', 'c', 'd', 'e')

The output should be (1, ‘a’, 2, ‘b’, 3, ‘c’, 4, ‘d’, 5, ‘e’)

Question-4: Scatterplot#

There are 5 houses in a specific area, each described by tuples containing their x and y coordinates, colors, sizes, and the names of the owners.

  • Use a for loop to plot each house individually, displaying the first characters of the owners’ names next to their respective houses.

  • Refer to the scatterplot section in Chapter-13: Visualization for implementation guidance.

x_tuple = (1, 5, 8, 3, 9)
y_tuple = (7, 1, 9, 5, 3)
color_tuple = ('green', 'red', 'orange', 'navy', 'pink')
size_tuple = (250, 50, 200, 100, 175)
name_tuple = ('Michael', 'Tim', 'Jennifer', 'Liz', 'Frank')

Question-5: Barplot#

Ask the user to enter as many numbers as they want.

  • Store these numbers in a tuple.

  • Warn the user if a non-numeric value is entered.

  • Use a while loop and try-except.

  • Calculate the count, mean, median, standard deviation, maximum, and minimum values of the entered numbers.

  • Visualize these values using a bar graph.

  • Refer to the barplot section in Chapter-13: Visualization for implementation guidance.

Sample Output Enter a number or type Q to quit. 3
Enter a number or type Q to quit. 7
Enter a number or type Q to quit. 2
Enter a number or type Q to quit. 9
Enter a number or type Q to quit. w
Please enter a numerical value!
Enter a number or type Q to quit. 4
Enter a number or type Q to quit. Q
Numbers: (3.0, 7.0, 2.0, 9.0, 4.0)
add your BARPLOT here.

Question-6#

Create a tuple with the elements: \(2, 8, 4, 8, 4, 10, 4\) and print the following information about this tuple:

  • The number of occurrences of 10.

  • The element at index 4.

  • The second element.

  • The index of the first occurrence of 4.

  • The index of the second occurrence of 4.

  • The index of the third occurrence of 4.

  • The length (number of elements) of the tuple.

  • The maximum, minimum, and the sum of the elements.

  • The last two elements using slicing.

  • The first three elements using slicing.

Question-7#

Find the average exam result for the 9th graders among the provided grade levels and exam results using a for loop.

grade_level = ( 9,  9, 10, 11, 10, 10,  9, 10, 11, 11, 10, 11,  9, 11, 11,  9, 10, 10, 10, 10)
exam_result = (59, 20, 81, 30, 62, 56, 85, 72, 48, 15, 47, 18, 11, 37, 79, 87, 79, 92, 82, 66)

Question-8#

For the given tuple below, print the elements that are strings, have at least 4 characters, and end with ‘r’.

mytuple = ( 'table', 'chair', 'desk', 'pen', 5, 7, 8,  'pencil', 'eraser', True, 'ruler', 'car')

Question-9: Accuracy Score#

The following two tuples represent the actual and predicted test scores (Positive/Negative) for some samples.

actual     = ('P', 'N','N', 'N', 'P', 'P','P', 'N', 'P', 'P', 'N', 'P', 'N', 'N', 'P', 'P', 'N', 'P','N', 'P', 'P')
prediction = ('N', 'N','P', 'N', 'P', 'N','N', 'N', 'P', 'P', 'P', 'P', 'P', 'N', 'P', 'P', 'N', 'P','N', 'N', 'P')

  • Compute the accuracy score for the predicted values, which is the ratio of correctly classified samples to the total number of samples.

Question-10: Outliers#

Given a tuple raw_data, create a new tuple where any value that is more than double the previous value is replaced by the previous value.

raw_data = (3,1,2,12,4,8,6,4,7,4,11,2,5,4,15,5,6,7,19,6)

Hint: Replace 12 with 2, 11 with 4, 2 with 5, 4 with 15, and 7 with 19.

Business Applications#

Question: Production Data Analysis#

The following two tuples represent the annual production and the corresponding years for a company over a 10-year period.

production = (3000, 2500, 5000, 4750, 2250, 6300, 8000, 7500, 9000, 8700)
years = (2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021)

  • Calculate the total, average, and highest production using methods from numpy.

  • Determine the year with the highest production using the index() method.

Question: Profit and Loss#

The following three tuples represent the revenue, cost, and the corresponding years for a company over a 10-year period.

revenue = (2000, 4500, 5000, 6000, 3000, 4000, 8000, 2000, 6000, 3000)
cost    = (2500, 3500, 3750, 4500, 4000, 3500, 4500, 3000, 4500, 4000)
years   = (2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021)

  • Calculate the total profit and total loss.

  • Create a tuple consisting of the years when the company lost money.

  • Determine the overall profit during these 10 years

Question: Total Cost#

The following tuple represents the unit price-quantity pairs for various items. Write a program that computes the total cost using a for loop.

price_quantity = ((8 dollars, 100 items), (4 dollars, 300 items), (23 dollars, 150 items), (89 dollars, 75 items))

Question: Stock Symbols#

Given the following tuple containing stock symbols, write a program that returns a new tuple with the following modifications:

  • Remove duplicate stock symbols while preserving the original order.

  • Replace any ‘.’ characters in the symbols with ‘-’ characters.

symbols = ['MMM', 'BF.B', 'CAT', 'AMZN', 'BRK.B', 'AAL', 'CAT', 'GOOG', 'MMM', 'AEP']

Question: Stock Value Calculation#

The initial stock price is 200. A tuple of daily percentage changes for the next ten days is provided.

  • Calculate the stock price at the end of each day for the next ten days.

pct_changes = (0.02, 0.03, -0.01, 0.04, 0.01, 0.08, 0.03, -0.01, 0.04, 0.01)