probability distribution Flashcards

1
Q

it applies the theory of probability to describe the behavior of the random variable

A

probability distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

determines the probability associated using either a graph or a mathematical formula.

A

continuous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

specifies all possible outcomes of the random variables along with the probability that each will occur.

A

discrete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

calculated from a finite amount of data.

A

empirical probabiliity

  • is the likelihood of an event happening based on actual data or past experiences. Instead of theoretical predictions, it uses real-world observations to calculate how often something occurs. For example, if you flip a coin 100 times and it lands on heads 55 times, the empirical probability of getting heads is 55/100, or 55%.

It’s like saying, “Based on what we’ve seen happen before, this is how often we expect it to happen again.”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

distribution of many other variables of interest based on theoretical considerations.

A

theoretical probability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

can take on one of two values of the variables

A

binomial distribution
failure = 0
success = 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what does it mean if in binomial distribution , the outcomes are exhaustive

A

it is the complete coverage, all possible outcomes/ results f an experiment or scenario are accountable for = complete and accurate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

When the distance of an event X is very rare and is dwarfed by the total population,

A

poisson distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

poisson distribution is aka

A

distribution of rare events

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

which distribution is continous and discrete

A

continuous - normal distribution
discrete - binominal and poisson

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what happens as the number of possible values approaches infinity and the intervals between them approach zero

A

the curve is more smooth and continuous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

gaussian curve and bell curve is aka

A

bell shape curve or simple bell surge

*it is the common continous distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

explain why the gaussian curve does not touch both ends

A

as they have outliers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A smooth curve is used to represent the probability distribution of a continuous random variable

A

probability density

*probability are represented by the area under the curve ratheer than the individual points

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

it shows the likelihood of different values occurring within the distribution

A

probability density function
(it is the curve itself)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly