Abbreviations
Definitions
Coding
Statistical Modelling
Random / Fun Facts
100
ANOVA
What is 'Analysis of Variance'?
100
An interdisciplinary field that uses data, analytic and scientific methods, algorithms, and modelling to solve real world problems
What is data science?
100
fizzbuzz <- function(num){
if ((num %% 3 == 0) & (num %% 5 == 0)) {
print("fizzbuzz")
} else if (num %% 3 == 0){
print("fizz")
} else if (num %% 5 == 0){
print("buzz")
} else{
print(num)
}
}
fizzbuzz(87)
What is "fizz"?
100
The name of the distribution plot you see on your screen.
What is normal distribution?
100
Number one most used programming language by Data Scientists.
What is Python?
200
R&D
What is 'Research and Development'?
200
Outlier
What is a data point that differs significantly from the rest of the data?
200
Most widely used R library used to build interactive visualizations for exploratory data analysis (an alternative to base R graphics)
What is ggplot2? (Could accept answer tidyverse, since it includes ggplot2)
200
The process of achieving very high accuracy for the training dataset but poor accuracy in predicting a new dataset
What is "overfitting"?
200
This is the amount of time spent on data cleaning (think percentage).
A. 95% B. 80% C. 75% D. 50% E. 20%
What is B, 80%?
300
SWOT
What is 'Strength Weaknesses Opportunity Threat'?
300
A test that always predicts no effect or no relationship between variables
What is "null hypothesis"?
300
Rate these 3 algorithms by time efficiency. Use best-case time complexity and order from worst to best.
Merge sort
Selection sort
Insertion sort
What is:
1. Merge Sort O(n*log n) (best case)
2. Insertion Sort O(n)
3. Selection Sort O(n2) (in any case)
300
The algorithm that has taken place
What is K-means clustering?
300
Harvard Business Review referred to Data Science as…
What is “the sexist job of the 21st century"?
400
NLP
What is ‘Natural language processing'?
400
A statistical method that fits a line through the data and tries to reduce Root-Mean-Squared Error (Residuals)
What is "Linear Regression"?
400
Which part of this query is executed first? i.e. SELECT * FROM customers WHERE first_name=’Maryam’ ORDER BY last_name desc
What is FROM clause?
400
The most typical train-test split (think percentages).
What is 80/20?
400
An ‘old’ programming language that has evolved into and replaced by R
What is S?
500
JSON
What is ‘JavaScript Object Notation’?
500
A machine learning task where the user must make predictions on their model as well as its accuracy?
What is "Supervised Learning"?
500
This command displays the state of the working directory (think version control)
What is “git status”?
500
This resampling algorithm or method involves dividing the observations into k groups or folds and estimating a model's ability to predict new observations.
What is a "Cross Validation Algorithm"?
500
This American statistician defined data science in 1962
Who is John W. Tukey?