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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

Difference between mean mode and median?

The mean is the average(all the numbers added together and divided by how many numbers there are) of all the numbers in the set. The mode is the number that appears/repeats the most. The median is the number in the middle of all the numbers when all the numbers in the set are lined up in order from lowest to highest. If there is an even number of numbers such as 1 2 3 4. You take the average of the two middle numbers (2+3)/2 =2.5.

What is z value for 76 percent ci?

The answer will depend on whether the confidence interval is one-sided, or two-sided and, if two-sided, whether or not it is symmetrical.

Symmetrical 2-sided: ±0.189

When you double the diameter of the area of a circle with the radius of 4 what happens to the circle area?

The radius also doubles as the diameter doubles so the new radius is now 8. This makes the area quadrupal because to find the area you must use the formula nr^2

What combination of factors produces the smallest risk of a type 1 error?

A combination of factors increase the risk of a Type 1 error. Giving the wrong amount or wrong diagnosis for a wrong drug would certainly increase an error.

How do you remember things for a test if you haven't studied?

Use a type of remembering called "memotechnia." Like me. I had some trouble with remembering some stuff for a Science test I have on Monday, (I'm in the 5th grade), and I used a phrase, "King Philip Came Over For Good Soup", to remember all of the 7 groupings of the domain Eukarya. Next thing I know, I ask myself the questions, and I know it all! You should try memotechnia. It really works! :)

From,

K. Ramos

P.S- If you don't think you can practice memotechnia by yourself, have a freind help. Tell them I told you! Don't take the memotechnia credit for yourself.

What is the mean value?

The mean value is the average of a group of numbers. All of the numbers in the group are first added all together. The sum of the number is then divided by however many numbers were in the group. The number that is arrived at is the mean value.

The use of mean values is widely used in compiling statistical information.

What is a dichotomous variable?

Two mutually exclusive or contradictory categories. (like when you flip a coin)

What does archipelago mean?

It is a tectonically formed group or cluster of large islands.such as aegean sea which contains a large number of scattered islands.
Archipelago is a chain or cluster of islands that is formed tectonically. The word archipelago is derived from the Greek ἄρχι- - arkhi- ("chief") and πέλαγος - pelagos("sea") through the Italian Archipelago. In Italian, possibly following a tradition of antiquity, the Archipelago(from medieval Greek was the proper name for the Aegean Sea and, later, usage shifted to refer to the Aegean Islands (since the sea is remarkable for its large number of islands). It is now used to generally refer to any island group or, sometimes, to a sea containing a large number of scattered islands like the Aegean Sea.

What is the beacon frequency of INST AA?

Each cell area broadcast the information about the that cell in bearer frequency for the following purposes To allow a synchronization in time and frequency of the MSs to the BTS. This synchronization is needed by the MS to access the services of a cell. The frequency and time synchronization procedures that are performed by the mobile To help the mobile in estimating the quality of the link during a communication, by measurements on the received signal from the BTS it is transmitting to, and from the other BTSs of the geographical area. These measurements are used by the network to determine when a handover is necessary, and to which BTS this handover should apply.

To help the mobile in the selection of a cell when it is in idle mode (that is, not in communication, but still synchronized to the system and able to receive an incoming call or to initiate a call). This selection is performed on the basis of the received power measurements made on the adjacent cells' beacon channels. To access the general parameters of the cell needed for the procedures applied by the MS, or general information concerning the cell, such as its identification, the beacon frequencies of the surrounding cells, or the option supported by the cell (services).

What is the probabilityof rolling a 2 on one roll of a die?

On a standard 6 sided die then the probability would be 1/6 if it is a 12 sided die then it would be 1/12 it varies by how man sides of the die there are.

What are the uses of statistics in the field of sports?

Improve personal or team performance by looking at the weak areas.

See the opponent's poor stats and concentrate in attacking their weak areas.

It is used in betting to attract customers with better odds.

For the clubs safety reasons when pitting a team or a player against certain team, players or environment and certain predicted performance will occur.

For example, two players have a bitter rivalry from previous matches, and the likelihood for fouls between the pair are very likely, and it can be used to gain the upperhand or used in betting for first card to be received etc.

How many 9 digit combinations are there for numbers 0 through 9?

That's exactly all the numbers you need to count from 000,000,000 to 999,999,999.

There are one billion of them.

How many ministers are there in USA 2011?

I seriously doubt that there are ANY government statistics kept on this figure - mainly due to the Constitutionaly required separation between church and state.