Arrays & Iteration
In Python, what would you use to go through every element in a list one by one?
For loop
What type of plot would you use to display the relationship between two continuous variables?
scatter plot
What is the probability of rolling 5 or greater on a fair die?
2/6 or 1/3
What does ML stand for in data science?
Machine learning
Guess the movie:
👩🏼🥀👹🎶
Beauty and the Beast
You have a list of test scores: [80, 90, 70, 100] called scores. What function would you use to get the length of scores?
len(scores)
What is the difference between a bar chart and a histogram?
Histogram: distribution of continuous numerical data by grouping it into ranges (bins) and showing the frequency in each bin
What is the probability of flipping 2 heads in 3 fair coin tosses?
3/8
In hypothesis testing, what is the default assumption you are trying to find evidence against?
Null hypothesis
Who has won the most grammys of all time?
Beyonce
You have a list of numbers and want to find the largest one. What function would you use to get the largest number?
max()
What is the name of the library we use to make visualizations?
Seaborn
A bag contains 5 red balls, 3 blue balls, and 2 green balls. If two balls are drawn at random without replacement, what is the probability that both are red?
The probability is 2/9.
(First red: 5/10, then second red: 4/9 → (5/10) * (4/9) = 20/90 = 2/9)
In hypothesis testing, if your p-value is 0.03 and your significance level (alpha) is 0.05, what conclusion do you draw?
Reject the null hypothesis, because 0.03 < 0.05.
What floor number is usually skipped in buildings because it is considered unlucky?
13
What Python method would you use to add a new item to a list?
In a boxplot, which component represents the range of the middle 50% of the data?
The interquartile range (IQR), which is the distance between Q1 and Q3.
Two fair six-sided dice are rolled. What is the probability that the sum is a prime number?
15/36.
(Prime sums: 2, 3, 5, 7, 11 → combinations: 1, 2, 4, 6, 2 → total = 15)
What type of learning is linear regression?
Supervised learning
Who said, "Life is like a box of chocolates, you never know what you're gonna get." Bonus points if you can name the movie that it was said in
Forrest Gump
You have the array [3, 1, 4, 1, 5]. Using a for loop, how many total iterations are made when summing all elements?
5 iterations.
(One for each element in the array)
What is the correct formatting to create a scatterplot using Python?
sns.scatterplot(x='column_x', y='column_y', data=dataframe)
How would you calculate the probability of both events A and B happening if the A and B are independent?
Multiply the probabilities of A and B
Name at least 2 out of the 7 steps of machine learning.
Data collection, preparing data, choosing model, training, evaluation, hyperparameter tuning, prediction
What are the full names of your HI and all the instructors of your bootcamp?
9:30am - Ethan Shohet, Raghavan Srinivas, Tyler Jung, Ayush Gupta
10:30am - Alankrita Malhotra, Adam Tay, Yatindran Dilip
11:30am - Bill Taing, Gillian Hu, Amber Yu, Sarvagya Goyal