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Statistics

Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.

36,756 Questions

How far is 650nm?

That's actually fairly meaningless, 1nm is one nanometre, there are one billion (1 000 000 000) nanometres in one metre. There are 1 609 metres in one mile. The number of nanometres in one mile is to big to be really meaningful.

What does tracert mean?

the network path to a destination

AnswerTraceroute ( or Tracert )is a comp network tool used to determine the route taken by packets across the IP network.

Tracert is a tool which is used on Microsoft window Operating system, while traceroute tool is available on particular Unix-like OS....

Tracert n Traceroute are same in functionality bt having differt names in different Operating sys.

What are the advantages and disadvantages of working with multiple DBMS tables?

The advantages of DBMS are as follows:

-Controlling redundancy

-Providing storage structure for efficient query processing.

-Restricting unauthorized users.

-Providing concurrency.

-Providing backup and recovery.

-Enforcing integrity constraints.

The disadvantages are as follows:

-Centralization:That is use of the same program at a time by many user sometimes lead to loss of some data.

-High cost of software.

technical experties are required

power dependency

--

Reporting features like charts of a spreadsheet like Excel may not be available in RDBMS.

What is the different phases of statistic?

The different sources of data are published and unpublished documents, govt magazines, personal diaries, memories, letters etc

What is the FORTRAN program for pascal's triangle?

the logic i have used is nCr => n!/(r!*(n-r)!) for example the outer loop counter is 'n' and the inner loop counter is 'r' , then the corresponding element of the pascal's triangle will be nCr. keep in mind that both the loops will have to start from zero. #include<stdio.h> main()

{

int num,i,j,k,space;

int difffact=1,diff,n,r,x,y,comb=0,nfact=1,rfact=1;

printf("please enter the number of lines\n");

scanf("%d",&num); k=num-1;

space=num-1;

for(i=0;i<num;i++)

{

k=space--;

for(;k>0;k--)

{

printf(" ");

}

for(j=0;j<=i;j++)

{

comb=0;

nfact=1;

rfact=1;

difffact=1; for(n=i;n>=1;n--)

nfact=nfact*n; for(r=j;r>=1;r--)

rfact=rfact*r; diff=i-j;

for(;diff>=1;diff--)

difffact=difffact*diff; comb=(nfact/(rfact*difffact));

printf("%d ",comb);

}

printf("\n");

}

}

Use of statistics in civil engineers?

Civil engineering has a lot of uncertainty associated with it. To deal with those uncertainties, engineers use statistics and probability as a tool. Example: load prediction on a structure is estimated using statistics, strength of steel/concrete is generally a varying one and it has to estimated using statistics. Generally, design is done based on codes which make the statistical analysis a simple deterministic one.

How do you generate true random numbers?

True random numbers need a number frame to give it space. Try perl. type in $randomnumber1=int(rand(200))+1; you can change the 200 to anything you like and it will generate a random number between whatever your number is and one.

What does the term floating neutral mean?

This could mean a couple of different things. At some point in the power distribution system, the neutral bus is normally tied to the ground bus. If the neutral is not grounded, this could be called a floating neutral. More often, the term is used to describe a load, such as a light fixture or motor where the neutral wire has accidentally not been connected. The hot wire is live, but the device does not function. The neutral wire normally provides the return path for current to flow. This is a very dangerous situation. The live voltage flows from the hot wire, through the load, then into the neutral wire. If the neutral is not connected (grounded), it becomes hot! Everyone knows the hot wire can bite you, but we normally expect the neutral to be dead. We may carelessly handle the neutral, thinking it is dead, but if it is floating (unconnected), it could be live. Many people have been killed in this fashion. <><><>

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

What is the role of a technical support engineer?

The role of a technical support engineer is to plan analyze the program of the each profile plan, as per standard engineering requirements, specification of the project.

What is data collection?

Hi,

A collection of data means too many data files kept on one place. A software will help to do this easily.

Thanks

Techvedic..........A Technical Support Firm

Which number belongs to the solution set of the equation below?

Do you mean the equation x + 6 = 45?

If so I need an answer too. The solutions are:

A. 35

B. 39

C. 45

D. 51

E. 3

F. 0

Someone please answer this

How do you multiply a three digit number by a four digit number?

You put the four digit number at the top of the three digit number and you do the same thing as you would do with a two digit number with a 3 digit number.

An object uniformly accelerates over a distance of 100 m in 20 seconds. What is the acceleration?

an object uniformly accerlerates over a distance of 100 m in 20 seconds. calculate the acceleration.

What are managerial duties?

Team building activities heighten the effectiveness of team building sessions when targeted to the facilitation or training topic and the needs of the team participants. Check here for the team building activites I develop and for the best team building activities from the Web. Team building activities can be used as ice breakers, but they tend to take more time than the average ice breaker or warm up energizer.

Why is mathematics used presenting data?

Mathematical Figures Are Universal &&;nd Can Be Understood By Other Scientists

How do you use spss 12?

SPSS (Statistical Package for the Social Sciences) is a software program widely used for statistical analysis and data management. However, as of my knowledge the latest version of SPSS available in SPSS 27. I do not have specific information on SPSS 12, as it is an older version. Nevertheless, I can provide you with a general overview of how to use SPSS, and the basic principles should still apply to version 12.

1. Data Entry: Start by entering your data into SPSS. You can either type the data directly into the program or import it from an external source, such as Excel or CSV files.

2. Variable Definitions: Define the variables in your dataset. Specify the variable type (numeric, string, or date), assign variable labels, and define the value labels for categorical variables.

3. Data Cleaning: Clean your data by checking for missing values, outliers, and other inconsistencies. SPSS provides various tools to assist with data cleanings, such as the Data Editor and Data View.

4. Descriptive Statistics: Calculate descriptive statistics for your variables to understand the basic characteristics of your data. SPSS provides options to calculate measures like means, standard deviations, frequencies, and more.

5. Data Analysis: Perform statistical analysis using the available procedures in SPSS. This could include running t-tests, chi-square tests, ANOVA, regression analysis, factor analysis, and many other statistical techniques. You can access these procedures through the Analyze menu.

6. Output Interpretation: After running the SPSS data analysis, SPSS will generate output tables and charts. Interpret the results to draw conclusions and insights from your data. It's essential to understand the statistical concepts behind the analyses you performed.

It's worth noting that the user interface and specific features may vary between different versions of SPSS. Therefore, referring to the SPSS 12 documentation or user manual can provide more detailed instructions tailored to that specific version.

Why is mathematics used in collecting data?

Mathematics used in collecting data because factors of numbers would be operated.

When can't i use SPSS and why?

The answer depends on the context.

  • You cannot use SPSS if you have no computer. The reason is that SPSS is a computer based analysis package.
  • You cannot use SPSS if you have no data. There must be an input into SPSS.
  • You cannot use SPSS if your assumptions are not supported by the data. For example doing a linear regression for a relationship that is clearly non-linear. Technically, you CAN use SPSS but the reults will be wrong.


Is it never safe to take publish statistics at their face value without knowing their meaning and limitations?

Never? Avoid thinking in absolutes.

It is much better to understand published statistics but impossible to say "never safe to ...".

What set of numbers does -14 belong to?

There are many sets of numbers -14 belongs to:

  • set of negative integers
  • set of rational numbers
  • set of real numbers
  • set of complex numbers, which is the biggest known number set