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41 Cards in this Set

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What is a Statistics?

A branch of applied mathematics that deals with the collection, organization, presentation, analysis and interpretation of data

A branch of applied mathematics C O P A I

Statistics

Collection, Organization, Presentation, Analysis, and interpretation of data

C O P A I

Descriptive Statistics

Deals with the collection and presentation of data and collection of summarizing values to describe its group characteristics

summarizing

Descriptive Statistics

Organize, Summarize, Simplify describe and present data

Descriptive Statistics

data summary (bargraphs, histogram, pie charts, etc)

Inferential Statistics

Deals with the predictions and inferences based on the analysis and interpretation of the results of the imformation gathered by statistican

Generalize from sample to population

What is a Variable?

Characteristics of objects or individuals

what is a random variable

Numerical quatities that is derived from the outcomes of random exriments

Types of random Variables

Discrete, Continuous

Discrete Variable

is a numerical value associated with the desired outcomes.

Discrete Variable

It is also either a finite or infinite number of values but countable such as whole numbers 0,1,2,3

Continuous Variable

Has infinite numerical values associated with any interval on the number line system wothout any gaps or breaks.

continuous variable

-Weight


-skull circumference


-temperature


-Height

Example Discrete Variable

-the number of daily admissions in a hospital

discrete probability distribution

probability mass function

consists of the values a random variable can assume and the corresponding probabilities of the values

discrete probability

Step 1

Determine the sample space

step 2

count the number of ___ in each outcome in the sample space and assign this number to this outcome

Wich of the following is the type of statistics that deals with the collection and summarizing of gathered data?

Descriptive Statistics

Determine the sample size when you toss a die

1,2,3,4,5,6

Which of the following is the type of random variable that deals with the countable outcomes?

Disrete Variable

Determine the sample size when you flip a 10 peso coin

head and tail only

Classify the given if it is DISCRETE or CONTINUOUS. -Temperature in Baguio City-


Continuous

Which of the following is the process of collecting data?


collection, organization, presentation, analysis and interpretation

Classify the given if it is DISCRETE or CONTINUOUS. -Number of cellphones sold in ABC Store-


Discrete

Classify the given if it is DISCRETE or CONTINUOUS. -Students enrolled in Grade 11 Descartes-


Discrete

Classify the given if it is DISCRETE or CONTINUOUS. -Height of students athlete-


Continuous

Among the choices below, which of the following is the characteristics of an objects?

Variable

Which of the following is the type of statistics that deals with the prediction and analysis of gathered data?

Inferential Statistics

Which of the choices below is incorrect

Sample-Numerical

Among the choices below, which of the following is a variable whose value is unknown or a function that assigns values to each of an experiment's outcomes.

Random Variable

Which of the following is NOT an example of continuous variable

Number of injured motorists in Quezon City yesterday

Classify the given if it is DISCRETE or CONTINUOUS. -Number of points scored in Volleyball-


Discrete

Which of the choices below is incorrect in Statistics

Variable- x and y

Classify the given if it is DISCRETE or CONTINUOUS. -weight of your classmate-


Continuous

Classify the given if it is DISCRETE or CONTINUOUS. -shoe size of your sister-


Continuous

Which of the following is the type of random variable that deals with the infinite and measurable outcomes?

Continuous Variable

Classify the given if it is DISCRETE or CONTINUOUS. -Amount of money spent in Christmas-


Discrete

This is the collection of all possible outcomes.

Sample Space

Classify the given if it is DISCRETE or CONTINUOUS. -speed of a bus-


Continuous

The _____ is the weighted average of the possible values that the random variable can take.

mean of a discrete random variable X