What you'll learn
Introduction To Statistics For Data Science & AI
Practical Statistics Hands On Tutorials
Introduction To Hypothesis Testing , Statistics Inferences
Why To Learn Statistics For Data Science & Machine Learning?.
Do I need To Know All The Statistics , If Not What Are The Important Concepts To Master
Hands On Tutorial On Probability & Statistics
Master All The Concepts & Practical Skill In Statistics For Data Science & Artificial Intelligence
Requirements
No Programming Skills, but basic knowledge of statistics is expected to get maximum from this course
Description
Data Scientist is one of the most lucrative career options that offers immense job satisfaction, insanely high salaries, global recognition, and amazing growth opportunities. Further, this profession offers an astonishing job satisfaction rating of 4.4 out of 5. As per the Harvard Business Review, Data Scientist is defined as the most desirable profession of the 21st century. Machine Learning and Statistics are the two core skills required to become a data scientist.
Statistics is like the heart of Data Science that helps to analyze, transform and predict data. So if you are willing to ace your career in this astonishing domain then it is really important to get yourself familiar with all the relevant Statistics topics for data science. Statistics is an extremely wide field and determining what you need to learn can be difficult. To make your learning experience smooth we can help you. In this blog, we will discuss the seven basic Statistics Concepts for Data Science. The topics covered in this blog will build the basic foundation of your statistical skills.
1. Descriptive Statistics
It is used to describe the basic features of data that provide a summary of the given data set which can either represent the entire population or a sample of the population. It is derived from calculations that include
Mean: It is the central value which is commonly known as the arithmetic average.
Mode: It refers to the value that appears most often in a data set.
Median: It is the middle value of the ordered set that divides it in exactly half.
2. Variability
Variability includes the following parameters
Standard Deviation: It is a statistic that calculates the dispersion of a data set as compared to its mean.
Variance: It refers to a statistical measure of the spread between the numbers in a data set. In general terms, it means the difference from the mean. A large variance indicates that numbers are far apart from the mean or average value. A small variance indicates that the numbers are closer to the average values. Zero variance indicates that the values are identical to the given set.
Range: This is defined as the difference between the largest and smallest value of a dataset.
Percentile: It refers to the measure used in statistics that indicates the value below which the given percentage of observation in the dataset falls.
Quartile: It is defined as the value that divides the data points into quarters.
Interquartile Range: It measures the middle half of your data. In general terms, it is the middle 50% of the dataset.
3. Correlation
It is one of the major statistical techniques that measure the relationship between two variables. The correlation coefficient indicates the strength of the linear relationship between two variables.
A correlation coefficient that is more than zero indicates a positive relationship.
A correlation coefficient that is less than zero indicates a negative relationship.
The correlation coefficient of zero indicates that there is no relationship between the two variables.
4. Probability Distribution
It specifies the likelihood of all possible events. In simple terms, an event refers to the result of an experiment like tossing a coin. Events are of two types dependent and independent.
Independent event: The event is said to be an Independent event when it is not affected by the earlier events. For example, tossing a coin, let us consider a coin is tossed the first outcome is head when the coin is tossed again the outcome may be head or tail. But this is entirely independent of the first trial.
Dependent event: The event is said to be dependent when the occurrence of the event is dependent on the earlier events. For example when a ball is drawn from a bag that contains red and blue balls. If the first ball drawn is red, then the second ball may be red or blue; this depends on the first trial.
The probability of independent events is calculated by simply multiplying the probability of each event and for a dependent event is calculated by conditional probability.
5. Regression
It is a method that is used to determine the relationship between one or more independent variables and a dependent variable. Regression is mainly of two types
Linear regression: It is used to fit the regression model that explains the relationship between a numeric predictor variable and one or more predictor variables.
Logistic regression: It is used to fit a regression model that explains the relationship between the binary response variable and one or more predictor variables.
6. Normal Distribution
Normal is used to define the probability density function for a continuous random variable in a system. The standard normal distribution has two parameters - mean and standard deviation that are discussed above. When the distribution of random variables is unknown, the normal distribution is used. The central limit theorem justifies why normal distribution is used in such cases.
7. Bias
In statistical terms, it means when a model is representative of a complete population. This needs to be minimized to get the desired outcome.
The three most common types of bias are
Selection bias: It is a phenomenon of selecting a group of data for statistical analysis, the selection in such a way that data is not randomized resulting in the data being unrepresentative of the whole population.
Confirmation bias: It occurs when the person performing the statistical analysis has some predefined assumption.
Time interval bias: It is caused intentionally by specifying a certain time range to favor a particular outcome.
At the End of this course you will be able to learn the skills:-
Learn how to work with different types of data
How to plot different types of data
Calculate the measures of central tendency, asymmetry, and variability
Calculate correlation and covariance
Distinguish and work with different types of distributions
Estimate confidence intervals
Perform hypothesis testing
Make data driven decisions
Understand the mechanics of regression analysis
Carry out regression analysis
Use and understand dummy variables
Understand the concepts needed for data science even with Python and R!
Who this course is for
Beginner and Intermediate Level Data Science & AI Aspirants

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