Distribution Flashcards
What’s Gaussian(Normal) Distribution?
The bell-shaped, symmetric distribution over the whole range of real numbers. Has 2 parameters: mean and variance
What’s Student Distribution?
Almost the same as the Normal Distribution, but it is less sensitive to outliers in small samples
What’s Beta Distribution?
The distribution on limited interval [0,1], but can be linearly translated into [a, b]
What is the difference between ND and SD?
The normal distribution assumes that the standard deviation is known. The student distribution does not make this assumption
What is the difference between ND and BD?
Different intervals, different parameters, different uses
What is probability distribution?
a function over the random variable $X$, which assigns the probability to each possible value of the variable.
What is outlier in statistics?
a data point that differs significantly from other observations
What is Variance?
is a measure of variability. It is calculated by taking the average of squared deviations from the mean.
Variance tells you the degree of spread in your data set. The more spread the data, the larger the variance is in relation to the mean.
What is Standard Deviation?
is the average amount of variability in your dataset. It tells you, on average, how far each value lies from the mean.
A high standard deviation means that values are generally far from the mean, while a low standard deviation indicates that values are clustered close to the mean.
What is the difference between Variance and Standard Deviation?
Standard deviation is a square root of the Variance
Data interpretation
The process of reviewing data and arriving at relevant conclusions using various analytical research methods
What is PDF
Probability Density Function.
is the mathematical function that gives the probabilities of occurrence of different possible outcomes for an experiment.
Data fitting
The main target is to draw the line through a data set
