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Viewer RatingYou must sign in to voteToday, I want to discuss on a very important topic on inferential statistics area and that is “Hypothesis”. Hypothesis means a conclusion based on some evidence collected from data for a certain time. In statistics , we explain hypothesis in two ways: When we have something already defined, we … Read more
Viewer RatingYou must sign in to voteLet us start today’s topic on uniform probability distribution (I will discuss on continuous dist today). Now, the concept comes in two forms: discrete and continuous. If I toss a coin then there are two possible outcomes: Head and Tail. If I roll a die, then it always return … Read more
Viewer RatingYou must sign in to voteToday, I would like to extend my previous topic on discrete probability distribution with the concept of Binomial Distribution. A binomial distribution is a specific probability distribution. It is used to model the probability of obtaining one of two outcomes, a certain number of times k out of fixed number of … Read more
Viewer RatingYou must sign in to voteIn today’s topic I want to explain how we plot the distribution of a random discrete variable. Key terms: expected mean, probability, variance and standard deviation. Let’s explain it by an example. For rolling a Die, let us assume a random variable X (x=1,2,3,4,5,6). The probability is P(x) =1/6. … Read more
Viewer RatingYou must sign in to voteToday’s topic is random variable. It is better to start with an example: Suppose I roll a die. What are the probable outcomes? Exactly 1 or exactly 2 or exactly 3 or exactly 4 or exactly 5 or exactly 6. No number in between. Let’s put another example: if … Read more
Viewer RatingYou must sign in to voteIn statistics, a sample is a part of a population and a population is a whole; it’s every member of a group. All elements in a sample must also by definition be part of the population as it is defined. The sample should be representative of the population from … Read more
Viewer RatingYou must sign in to voteThe Human mind can perceive only four dimensions. The first three being physical dimensions such as length, breadth and height, and the fourth being the Time dimension. That is why we can see, hear, feel and touch only those entities which exist in the three dimensional world. Our sensory … Read more
Viewer RatingYou must sign in to voteSince time immemorial, humanity has been perplexed about the possibility of extra terrestrial life and visitors from outer space. There have been numerous reports of sightings of spaceships and natural phenomenon which did not have any logical explanation and which could not be attributed to any other event or … Read more
Viewer RatingYou must sign in to voteA black hole is a region of space-time exhibiting such strong gravitational effects that no particle or electromagnetic radiation, such as light, can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform space-time to form a black hole. The boundary of … Read more