Data Analysis with Python Lists: Quiz for Grade 7 Computer Science

📚 Quick Study Guide

🔍 Python lists are ordered collections of items, which can be of different data types. 💡 Lists are created using square brackets `[]`. 📝 List items are accessed using their index, starting from 0. ➕ You can add items to a list using `append()`, `insert()`, or `extend()`. ➖ Items can be removed using `remove()`, `pop()`, or `del`. 🔢 You can find the length of a list using the `len()` function. 🔄 Lists can be modified, meaning you can change their contents after they are created.

🧪 Practice Quiz

1. Which of the following is the correct way to create an empty list in Python?
   1. `list()`
   2. `{}`
   3. `()`
   4. `[]`
2. What is the index of the first element in a Python list?
   1. 1
   2. 0
   3. -1
   4. The length of the list
3. Which list method adds an element to the end of the list?
   1. `add()`
   2. `insert()`
   3. `append()`
   4. `extend()`
4. What will be the output of the following code?

   my_list = [1, 2, 3]
   print(len(my_list))

   1. 2
   2. 4
   3. 3
   4. Error
5. Which method removes the first occurrence of a specific element from a list?
   1. `pop()`
   2. `delete()`
   3. `remove()`
   4. `discard()`
6. How can you access the element at index 2 in the list `my_list`?
   1. `my_list[2]`
   2. `my_list.get(2)`
   3. `my_list(2)`
   4. `my_list[3]`
7. What does the `insert()` method do in Python lists?
   1. Adds an element at the end of the list
   2. Removes an element from the list
   3. Adds an element at a specific index
   4. Reverses the order of the list