EDA (Exploratory Data Analysis) : what is the stat process

Question 1

What is the Mean

Answer 1

The Mean is the statistical average of a set of numbers

Question 2

What is the Median

Answer 2

The Median is the middle of a set of numbers , in a data set this can be the value with equal values (rows, json objects, etc.) on each side of it, making it the middle or median.

Question 3

What is the Mode

Answer 3

The Mode is the most Recurrent value in the dataset or set of numbers.

Question 4

What is Range

Answer 4

The Range is the difference of the largest value in a set of number minus the smallest value.

Question 5

What are the Central Tendencies

Answer 5

Mean, Median, Mode, skewed mean, skewed median

Question 6

What is the Variance

Answer 6

The variance is the squared distance from the mean

Question 7

What is the Standard Deviation

Answer 7

The Standard Deviation is the square root of the variance and is the average amount we expect a point to differ from the mean.

Question 8

What are Correlations

Answer 8

Are the method we use to test the relationship between quantitative or categorical data, or more simply, how are things related.

Question 9

What is a Correlation Coefficient

Answer 9

A Correlation Coefficient is a way we put a value to the relationship.

Question 10

What is Empirical Probability

Answer 10

Is the probability that we observe from the data.

Question 11

What is Theoretical Probability

Answer 11

Is more of an ideal or truth out there in the universe that we can’t directly see.

Question 12

What is the Additive Rule

Answer 12

This rule states that if an event cannot be more than one state, then the probability of 2 events happening within an occurrence is the sum of both events.

Question 13

What is a GLM(general linear model)

Answer 13

These models explain that data can be modeled with an accurate model and some degree of error and they portray a line of best fit to the data.
This can be interpreted as y = b +mx instead of
y = mx + b in most cases

Question 14

What are Confidence Intervals

Answer 14

is an estimated range of values that seem reasonable based on what we’ve observed. It’s center is still the sample mean, but we’ve got some room on either side for our uncertainty.

Question 15

What is the T-Distribution

Answer 15

continuous probability distribution that’s unimodal(has one peak); it’s a useful way to represent sampling distributions.

Question 16

What is the Normal Distribution

Answer 16

A normal distribution is a symmetric bell curve that occurs when the mode, median, and mean are all the same when you visualize it.

Question 17

What is the Central Limit Theorem

Answer 17

The central limit theorem suggests that the distribution of sample means for an independent random variable, will get gradually closer to a normal distribution as the size of the sample gets bigger and bigger.
even if the original population distribution isn’t normal itself

Question 18

What is Null Hypothesis Significance Testing

Answer 18

A form of the Reductio AD Absurdum Argument, which tries to discredit an idea by assuming the idea is true and then showing that if you make that assumption, something contradictory happens.

Question 19

What is a P-value

Answer 19

In probability terms, the p-value is the probability of getting a sample as or more extreme than ours, given that the null hypothesis is true

Question 20

What is a Critical Value

Answer 20

the value of our test statistic that marks the limits of our extreme values.

Question 21

What is a Test Statistic

Answer 21

Are a procedure that allow us to quantify how close things are to our expectations or theories.

Question 22

What are Boxplots

Answer 22

This is a form of visualization that uses some of the measures of central tendency to picture the data

Question 23

What are Stem and Leaf plots

Answer 23

A form of plot