By: root - 7 August, 2020
Collect the tasks from the freelance website

Collect the tasks from the freelance website, filter them and show only the relevant tasks in the table


By: root - 29 July, 2020
What is standard deviation?

In fact, a standard deviation from the mean will shed light on the essence of many of the processes in your business. It plays a decisive role in most statistical … Read More


By: root - 29 July, 2020
Public transport traffic

A certain bus (trolleybus / tram) runs at intervals of 10 minutes, and at a random moment in time you come to a stop. What is the frequency of the … Read More


By: root - 29 July, 2020
Power law with probability density function

In statistics, a power law is a functional dependence between two quantities in which a relative change in one quantity leads to a proportional relative change in another quantity, regardless … Read More


By: root - 29 July, 2020
Determine the failure rate in batches

A binomial experiment is a statistical experiment that has the following properties:

  • The experiment consists of n repeated trials.
  • Each trial can result in just two possible outcomes. We … Read More

By: root - 29 July, 2020
The odds of getting 550 visits per day

My website gets on average 500 visits per day. What is the odds of getting 550?


By: root - 29 July, 2020
Trendy diagram for creating a motivator

Build a chart for (de)motivation that can be used in advertising or on a social network.


By: root - 29 July, 2020
Number of parts created last week

Show the number of parts created for the last week, where x - the number of parts produced, and y - the number of repetitions


By: root - 29 July, 2020
Cars 2019 model year, distributed by the number of gears

A dataset for the models of cars of the 2019 year was uploaded. The histogram shows their distribution by the number of gears.


By: root - 29 July, 2020
Distribution of MPG values on the vehicles

Plot a histogram together with a smooth distribution of histogram overlaid on it


By: root - 29 July, 2020
Classify cars by how many cylinders are in their engines

Look for relationships between cylinders, city MPG rating, Highway MPG rating, and combined MPG rating.


By: root - 29 July, 2020
Compare Engine displacement with Combined MPG

Show how data is distributed across Engine displayed and Combined MPG


By: root - 29 July, 2020
Compare engine displacement with Highway MPG(scatter + hist)

Show how data is distributed across Engine displacement and Highway MPG


By: root - 29 July, 2020
Compare engine disp. with MPG (scatter + linear regression)

Show how data is distributed across Engine displacement and City MPG


By: root - 29 July, 2020
Compare engine disp. with MPG (scatter + linear regression)

Show how data is distributed across Engine displacement and City MPG


By: root - 29 July, 2020
Combined fuel consumption values for car manufacturers

Generate a box plot for each vehicle manufacturer, vizualising the miles-per-gallon ratings across the vehicles they produce.


By: root - 29 July, 2020
Fuel consumption values for car manufacturers

Generate a swarn plot for each vehicle manufacturer, vizualising the miles-per-gallon ratings across the vehicles they produce.


By: root - 29 July, 2020
Calculate the number of occurrences of each category

Count up how many times each given category on the X axis occurs in my data.


By: root - 29 July, 2020
Fuel consumption for each engine and cylinder quantity

Create a heat-map with the average MPG ratings for every combination of number of cylinders and engine displacemen


By: root - 29 July, 2020
Probability of testing positive if you are positive

We have a drug test that can accurately identify users of a drug 99% of the time, and provide a negative result for 99% of non-users. However only 0.3% of … Read More


By: root - 29 July, 2020
Estimate the fuel consumption using some observable data

Visually estimate the fuel consumption per engine displacement using some observable data. (linear regression)


By: root - 29 July, 2020
Estimate the fuel consumption using some observable data

Split data into 2 parts (80% train and 20% test), shuffle it and visually estimate the fuel consumption per engine displacement using some observable data. (Polynomial Regression+ML)


By: root - 29 July, 2020
Price prediction considering several parameters

Predict the price of a car based on several parameters: mileage, number of doors, number of cylinders in the engine


By: root - 29 July, 2020
Group cars together into 6 groups

Group cars together into 6 groups based on their mileage and price (1 unit on the X scale is equal to one unit on the Y scale)


By: root - 29 July, 2020
Draw a decision tree that shows how employees were hired

Draw a decision tree that shows how employees were hired based on the csv file and also predict whether a person will be employed


By: root - 29 July, 2020
Predict the species of a flower

Predict the species of a flower sample just based on the sizes of its petals. 


By: root - 29 July, 2020
Group cars together into 8 groups

Group your cars into 8 groups depending on mileage and price (1% on the X scale is 1% on the Y scale).  Create a suggested zone for each group


By: root - 29 July, 2020
Movies similar to Star Wars (1977)

Based on the csv file, identify the top 10 movies similar to Star Wars (1977), display them on the chart from most similar to the least similar and indicate their … Read More


By: root - 29 July, 2020
List of interesting movies

Let the user enter a list of movies that he / she knows and rate them from 1 to 5. After that, the tool should create the top 10 movies … Read More


By: root - 28 July, 2020
Guess the rating of a movie Richard III (1995)

Guess the rating of a movie by looking at the 10 movies that are closest to it in terms of genres and popularity


By: root - 28 July, 2020
Distill multi-dimensional data down to 2 dimensions

Common application is image compression. Black and white photograph image has 3 dimensions: x(width) y(height) and z(color). If you do that in a technique that preserve the variance in that … Read More


By: root - 28 July, 2020
Train a virtual taxi to find the quickest way

Train a virtual taxi to find the quickest way between any two points to take a passenger and drop him off at a given place. Also, display the taxi movement … Read More


By: root - 28 July, 2020
Classify a coordinate point, check accuracy with K Fold

Train/test has its own limitations. It is possible to end up overfitting to a specific train/test split. This may be the case when the training dataset isn't really representative of … Read More


By: root - 28 July, 2020
Compare two data sets with each other

You have two datasets: before change and after the change. Please check if the decision was right to make this change.