This is an accompanying repository for the questions posted on Twitter by the account, Data Science Question a Day. You can follow the twitter account @data_question for daily questions on Data Science, Machine Learning, R programming and Python (possibly in future).
If in case, you find a correction in any of the questions, please do submit an issue request. If you would like to submit a question, please do submit an issue request.
Although this repository contains questions, the purpose of it is to act as a temporary placeholder for storing questions. Future plan is to migrate questions to more robust database and make the questions accessible via a website.
| S.No | Date | Topic | Link |
|---|---|---|---|
| 1 | 04 February 2021 | Programming, R | Link |
| 2 | 22 January 2021 | Data Science, Analytics | Link |
| 3 | 21 January 2021 | Programming, R, is.na() |
Link |
| 4 | 20 January 2021 | Programming, R, Sequence | Link |
| 5 | 19 January 2021 | Programming, R | Link |
| 6 | 14 January 2021 | Data Science, Heteroscedasticity | Link |
| 7 | 13 January 2021 | Programming, Python | Link |
| 8 | 12 January 2021 | Programming, R, Pipe operator (magrittr package) | Link |
| 9 | 11 January 2021 | Data Science, Logistic Regression | Link |
| 10 | 13 December 2020 | Programming, Python, Objects | Link |
| 11 | 12 December 2020 | Programming, Python, Closure | Link |
| 12 | 09 December 2020 | Programming, R, NROW |
Link |
| 13 | 08 December 2020 | Programming, R, GGplot | Link |
| 14 | 07 December 2020 | Programming, R, GGPlot | Link |
| 15 | 06 December 2020 | Programming, Python, Scope | Link |
| 16 | 05 December 2020 | Programming, Python, Scope | Link |
| 17 | 04 December 2020 | Data Science, Linear Algebra | Link |
| 18 | 03 December 2020 | Data Science, Linear Algebra | Link |
| 19 | 02 December 2020 | Programming, R, GGPlot | Link |
| 20 | 01 December 2020 | Programming, R, GGplot | Link |
| 21 | 30 November 2020 | Programming, R, GGPlot | Link |
| 22 | 29 November 2020 | Programming, Python, Functions | Link |
| 23 | 28 November 2020 | Programming, Python, Arbitary Arguments | Link |
| 24 | 27 November 2020 | Data Science, Linear Algebra | Link |
| 25 | 26 November 2020 | Data Science, Linear Algebra | Link |
| 26 | 25 November 2020 | Programming, R, Functions | Link |
| 27 | 24 November 2020 | Programming, R, Functions | Link |
| 28 | 23 November 2020 | Programming, R, sample() |
Link |
| 29 | 22 November 2020 | Programming, Python, Arbitary Arguments | Link |
| 30 | 21 November 2020 | Programming, Python, Docstring | Link |
| 31 | 20 November 2020 | Data Science, ROC curve | Link |
| 32 | 19 November 2020 | Data Science, Conditional Probability | Link |
| 33 | 15 November 2020 | Programming, Python, Global Variables | Link |
| 34 | 14 November 2020 | Programming, Python | Link |
| 35 | 13 November 2020 | Data Science, Recall | Link |
| 36 | 12 November 2020 | Data Science, Recall | Link |
| 37 | 11 November 2020 | Programming, R, ggplot() |
Link |
| 38 | 10 November 2020 | Programming, R, ggplot |
Link |
| 39 | 09 November 2020 | Programming, R, as.character() |
Link |
| 40 | 08 November 2020 | Programming, Python, Loops | Link |
| 41 | 07 November 2020 | Programming, Python, Logical | Link |
| 42 | 06 November 2020 | Programming, Python, Control Statement | Link |
| 43 | 05 November 2020 | Programming, R, Factor | Link |
| 44 | 04 November 2020 | Programming, R, Factors | Link |
| 45 | 03 November 2020 | Programming, R, require() |
Link |
| 46 | 02 November 2020 | Programming, R, ` | ` |
| 47 | 29 October 2020 | Programming, R, double |
Link |
| 48 | 28 October 2020 | Programming, R, & |
Link |
| 49 | 27 October 2020 | Programming, R, NA |
Link |
| 50 | 26 October 2020 | Programming, R, NULL |
Link |
| 51 | 25 October 2020 | Programming, Python, Strings | Link |
| 52 | 24 October 2020 | Programming, Python, Data Types | Link |
| 53 | 23 October 2020 | Data Science, Linear Regression | Link |
| 54 | 22 October 2020 | Programming, R, Linear Regression | Link |
| 55 | 21 October 2020 | Programming, R, Anova and Linear Regression | Link |
| 56 | 20 October 2020 | Programming, R, ifelse |
Link |
| 57 | 19 October 2020 | Programming, R, NA |
Link |
| 58 | 18 October 2020 | Programming, Python, Operators | Link |
| 59 | 17 October 2020 | Programming, Python, String | Link |
| 60 | 16 October 2020 | Data Science, Probability and Statistics, Bootstrap | Link |
| 61 | 14 October 2020 | Programming, R, Indexing | Link |
| 62 | 13 October 2020 | Programming, R, List | Link |
| 63 | 12 October 2020 | Programming, R, Length | Link |
| 64 | 11 October 2020 | Programming, Python, Strings | Link |
| 65 | 10 October 2020 | Programming, Python, Strings | Link |
| 66 | 09 October 2020 | Programming, R, Assignment | Link |
| 67 | 08 October 2020 | Programming, R, subset() |
Link |
| 68 | 07 October 2020 | Programming, R, Booleans | Link |
| 69 | 06 October 2020 | Programming, R, Operator Precedence | Link |
| 70 | 05 October 2020 | Programming, R, eval() and parse() |
Link |
| 71 | 04 October 2020 | Programming, R, is.vector() |
Link |
| 72 | 03 October 2020 | Programming, R, c() |
Link |
| 73 | 02 October 2020 | Programming, R, c() |
Link |
| 74 | 01 October 2020 | Programming, R, Assignment Operator | Link |
| 75 | 30 September 2020 | Programming, R, Vectors | Link |
| 76 | 29 September 2020 | Programming, R, Variables | Link |
| 77 | 28 September 2020 | Programming, R, functions | Link |
| 78 | 27 September 2020 | Programming, R, Scoping | Link |
| 79 | 26 September 2020 | Data Science, Probability and Statistics, Power | Link |
| 80 | 25 September 2020 | Data Science, Probability and Statistics, Power | Link |
| 81 | 24 September 2020 | Programming, R, Subsetting | Link |
| 82 | 23 September 2020 | Data Science, Probability and Statistics, Uniform Distribution | Link |
| 83 | 22 September 2020 | Programming, R, Variable Scoping | Link |
| 84 | 21 September 2020 | Programming, R, Environments | Link |
| 85 | 20 September 2020 | Data Science, Probability and Statistics, Bootstrap | Link |
| 86 | 19 September 2020 | Programming, R, Super Assignment Operator | Link |
| 87 | 18 September 2020 | Data Science, Probability and Statistics, Binomial Distribution | Link |
| 88 | 17 September 2020 | Data Science, Probability and Statistics, Binomial Distribution | Link |
| 89 | 16 September 2020 | Data Science, Probability and Statistics, Binomial Distribution | Link |
| 90 | 15 September 2020 | Data Science, Probability and Statistics, Chi-squared Distribution | Link |
| 91 | 14 September 2020 | Data Science, Probability and Statistics, Binomial Test | Link |
| 92 | 13 September 2020 | Data Science, Probability and Statistics, Binomial Distribution | Link |
| 93 | 12 September 2020 | Programming, R, seq_along() |
Link |
| 94 | 11 September 2020 | Programming, R, List | Link |
| 95 | 10 September 2020 | Data Science, Probability and Statistics, Normal Q-Q plot | Link |
| 96 | 09 September 2020 | Programming, R, S3 Class | Link |
| 97 | 08 September 2020 | Programming, R, Indexing | Link |
| 98 | 07 September 2020 | Programming, R, Indexing | Link |
| 99 | 06 September 2020 | Data Science, Probability and Statistics, Type 1 error and Type 2 error | Link |
| 100 | 05 September 2020 | Data Science, Probability and Statistics, Type 1 error and Type 2 error | Link |
| 101 | 04 September 2020 | Data Science, Probability and Statistics, Type 1 error and Type 2 error | Link |
| 102 | 03 September 2020 | Programming, R, Indexing | Link |
| 103 | 02 September 2020 | Data Science, Probability and Statistics, Type 1 error and Type 2 error | Link |
| 104 | 01 September 2020 | Data Science, Probability and Statistics, Type I error and Type II error | Link |
| 105 | 31 August 2020 | Programming, R, Indexing | Link |
| 106 | 30 August 2020 | Data Science, Statstics, Type 1 and Type 2 Error | Link |
| 107 | 29 August 2020 | Data Science, Classification | Link |
| 108 | 28 August 2020 | R programming, [ operator |
Link |
| 109 | 27 August 2020 | R programming, : operator |
Link |
| 110 | 26 August 2020 | ANOVA, One way ANOVA, Two way ANOVA | Link |
| 111 | 25 August 2020 | R Programming, Operator precedence | Link |
| 112 | 24 August 2020 | F Distribution | Link |
| 113 | 23 August 2020 | ANOVA, Hypothesis Testing | Link |
| 114 | 22 August 2020 | ANOVA, | Link |
| 115 | 21 August 2020 | Normal Distribution | Link |
| 116 | 20 August 2020 | One-way ANOVA | Link |
| 117 | 19 August 2020 | R Programming, ... operator |
Link |
| 118 | 18 August 2020 | Probability, Normal Distributions, | Link |
| 119 | 17 August 2020 | R programming, all.equal() Function |
Link |
| 120 | 16 August 2020 | Linear Regression | Link |
| 121 | 15 August 2020 | R programming | Link |
| 122 | 14 August 2020 | Spearman coefficient | Link |
| 123 | 13 August 2020 | R programming, Logical vectors | Link |
| 124 | 12 August 2020 | F-Statistic test | Link |
| 125 | 11 August 2020 | Pearson correlation coefficient | Link |
| 126 | 10 August 2020 | Pearson Correlation Coefficient, R square | Link |
| 127 | 09 August 2020 | Ordinary Least Squares Fitting | Link |
| 128 | 08 August 2020 | R square and Adjusted R square | Link |
| 129 | 07 August 2020 | Linear Regression in R | Link |
| 130 | 06 August 2020 | Linear Regression | Link |
| 131 | 05 August 2020 | Linear Regression, R, Interaction Effect | Link |
| 132 | 03 August 2020 | Object Types: R | Link |
| 133 | 31 July 2020 | Welch's t-test | Link |