Question

​​​​​​Variable Identification: how do i know if they have 1 or 2 variables?

1. A study was conducted to investigate the possible link between vaccination in children and autism.

Individual: a single child

Variable 1:

QN or CL :   

Variable 2 :

QN or CL:

2. An employee at a supermarket samples shoppers to determine if a majority of them are wearing face masks.

Individual: a single shopper

Variable 1:

QN or CL :   

Variable 2 :

QN or CL:

3. Does the average movie gross more than $10,000,000?

Individual: a single movie

Variable 1:

QN or CL :

Variable 2 :

QN or CL:

4. You want to conduct a study to compare how quickly pain relief is felt for 2 different brands of aspirin.

Individual: a person with pain

Variable 1:

QN or CL :

Variable 2 :

QN or CL:

5. A realtor wants to determine if property values in a particular area have decreased since last year.

Individual: a piece of property

Variable 1:  

QN or CL :   

Variable 2 :

QN or CL:

Answer 1

QUESTION (1):

1. A study was conducted to investigate the possible link between vaccination in children and autism.

Individual: a single child::

EQUATION::

TOTAL NO.OF CHILDREN = NO.OF CHILDREN X (VACCINATATED) + NO.OF CHILDREN X (NOT VACCINATED)

TOTAL NO.OF CHILDREN = NO.OF CHILDREN X (VARIABLE 1) + NO.OF CHILDREN X (VARIABLE 2)

Variable 1: NO.OF CHILDREN VACCINATED

Variable 2 : NO.OF CHILDREN NOT VACCINATED

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

QUESTION ( 2 ) :

An employee at a supermarket samples shoppers to determine if a majority of them are wearing face masks.

Individual: a single shopper:::

EQUATION::

TOTAL NO.OF SHOPPERS = NO.OF SHOPPPERS X (WEARING MASK) + NO.OF SHOPPPERS X ( NOT WEARING MASK)

TOTAL NO.OF SHOPPERS = NO.OF SHOPPPERS X (VARIABLE 1) + NO.OF SHOPPPERS X ( VARIABLE 2)

Variable 1: NO.OF SHOPPERS WEARING MASK

QN or CL :   

Variable 2 : NO.OF SHOPPERS NOT WEARING MASK

QN or CL:

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QUESTION ( 3 ) :

Does the average movie gross more than $10,000,000?

Individual: a single movie

EQUATION :

TOTAL NO.F MOVIES = NO..OF MOVIES X ( movie gross more than $10,000,000) + NO..OF MOVIES X ( movie gross not more than $10,000,000)   

TOTAL NO.F MOVIES = NO..OF MOVIES X ( VARIABLE 1) + NO..OF MOVIES X ( VARIABLE 2)   

Variable 1: No.of movies  gross more than $10,000,000

Variable 2 : No.of movies   not of gross more than $10,000,000

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QUESTION ( 4 ) :

You want to conduct a study to compare how quickly pain relief is felt for 2 different brands of aspirin.

Individual: a person with pain

total no.of persons = no.of Persons x (used first brand of aspirin) + no.of Persons x (used second brand of aspirin)   

total no.of persons = no.of Persons x (variable 1) + no.of PPersons x (variable 2)   

Variable 1: no.of persons  used first brand of aspirin

Variable 2 :no.of persons used second brand of aspirin

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QUESTION ( 5 ) :

A realtor wants to determine if property values in a particular area have decreased since last year.

Individual: a piece of property

EQUATION ::

TOTAL NO..OF PROERTIES = NO.OF PROPERTIES X (DECREASED SINCE LAST YEAR) +   NO.OF PROPERTIES X ( NOT DECREASED SINCE LAST YEAR )

TOTAL NO..OF PROERTIES = NO.OF PROPERTIES X ( VARIABLE 1 ) +   NO.OF PROPERTIES X ( VARIABLE 2 )

Variable 1: NO.OF POPERTIES VALUE DECREASED SINCE LAST YEAR

  

Variable 2 :NO.OF POPERTIES THAT VALUE IS NOT DECREASED SINCE LAST YEAR

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IN THEALL ABOVE PROBLEMS

ALL THE VARIABLE 1

VARIABLE 2

VALUES ARE KEEP ON CHANGING ITS VALUES ,, THAT IS THE REASON WE HAVE CONSIDER THOSE VALUES AS VARIABLES

AND

NO.OF CHILDREN , SHOPPERS , PERSONS ,MOVIES AND  PROPERTIES ARE ALWAYS BEING CONSTANT , NOT CHANGING ITS VALUES

THOSE VALUES ARE COSIDER AS CONSTANT VALUES .

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