## Statistics

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

## Subcategories

It can help to create the statistics. Sometimes it is difficult toknow the statistics are there if you do not see them on thecomputer.
Over 7,000 children are injured or killed due to ONLY gun violence.
50 kilometers=164,041.995 feet
A sample is a part of a population
Descriptive and inferential
There are 6 sides of a die, and rolling a 3 is one of the 6 sides. Therefore, there are 5 sides on the die which is not a 3. So, (outcomes wanted)/(total outcomes)=5/6
When the recession supposedly officially ended in June, 2009,the labor force participation rate was still 65.7%. .In the latest, much celebrated, unemployment report, the laborforce participation rate had plummeted to 63.7%, the most rapiddecline in U.S. history. That means that under President...
It would be a discrete distribution, since the number of cups are countable.
In math, an interval is a set of real numbers with the propertythat any number that lies between two numbers in the set is alsoincluded in the set.
An intervening variable is a hypothetical internal state that isused to explain relationships between observed variables
Dear Sir, Please tell me that after completing post graduate certificate incyber law(PGCCL) from IGNOU can i appeared in UPPSC PCS-Jexam..
Write an essay on the value of and importance of stakeholderanalysis as part of the process of policy planning within thepublic sector
A discrete number is a full, whole number while a continuous numbermay be any value in a range. Since a committee consists of people,and people aren't divisible, a committee consists of a whole number(discrete) of people.
Suppose the purchase price of a dining room set is \$650.If the sales tax is \$58.50, what is the sales tax rate?
No. Standard deviation is not an absolute value. The standard deviation is often written as a single positive value (magnitude), but it is really a binomial, and it equals both the positive and negative of the given magnitude. For example, if you are told that for a population the SD is 5.0,...
The median lethal dose is the average dose of a toxin that could cause death for specific individuals, taking into account age, height, weight, and general health. The median toxicity dose under the same conditions is the amount of a toxin needed to make one ill.
In other words "our society has modified and tempered with traditional values and beliefs for their own selfish wants" to me this quote seems like a negative view, not one the speaker is enthusiastic about. He/she is not pleased with the way the "world has skewed values" But hey as with many forms...
Land Surveyors use markers as reference points for topographic mapping. Companies such as NRG Surveys will install a series of markers and using specialist measuring equipment will measure the precise 3 dimensional cartesian coordinates of each marker with reference to a network. The network may be...
Range=20. The range is the difference between the largest value and smallest value in a population, and it roughly shows dispersion. For this case, it is 13 - (-7)=20. For small population sizes, the range is not a good statistic.
The set of X 1 , X 2 , ..., X N is called X. Given that mean(X), is the sum of all X divided by N, the variance of X is mean((X i - mean(X)) 2 ). The standard deviation of X is the square root of the variance.
In the statistical analysis of observational data, propensity scorematching (PSM) is also known as one to one individual matching. Itis a statistical matching technique that attempts to estimate theeffect of a treatment, policy, or other intervention by accountingfor the covariates that predict...
There are 36 permutations of two dice, with totals ranging from 2 to 12. Of those, only 6 permutations, 4-6, 5-5, 5-6, 6-4, 6-5, and 6-6 are greater than or equal to 10. The odds, then, of throwing 10 or higher is 6 in 36, or 1 in 6. The odds of throwing less than 10 is 30 in 36 or 5 in 6.
The probability of NOT drawing a spade from a standard deck of cards is 75 is an example of a mistated question - a standard deck of cards is 52, not 75.
A line graph shows a trend over time.
Answer is 9 million telephone numbers: from 100-0000 to 999-9999. A 7-digit phone number is no different than a 7-digit number. Each digit can be unique. A 7-digit number can have 10 million combinations (from 0000000 to 9999999). The problem says to exclude all phone numbers starting with a...
Answer .The Stem and Leaf plot was first used by John Tukey around 1977 in a study of volcanos..John Tukey was a mathematician and statistician who is credited with first using the term software to describe the programs that run on computers.
Define the following terms : (a) Environment (b) pollution
By the definition of standard deviation, 95.46% of the normal population will be within 2 SD of the mean. Explanation: The normal distribution of a population means it follows the "bell curve". The center of this bell curve is the population's mean value. One standard deviation defines two areas ...
Well people really like to go especially to dance, depending onwhat music you like, its lots of fun dancing, although some peoplejust go to drink, but mostly everyone goes for the dancing?
following are the limitation of QT techniques 1 inherent limitations concerning mathematical expressions 2 high cost are involved in using quantitative techniques 3 QT does not take in to consideration the intangible factors example non- measurable of human resources 4 QT are just tool of...
Because, if there is an even number of results in the set of data, the mean must be calculated by finding the half-way point between the two central numbers.
Answer is 199. The set of three-digit numbers starts at 000 and goes to 999. So we have to find each number with at least one "7" in this set. In the first hundred (000 to 099), instances of one or more 7s occur 11 times, for: 007 017 027 037 047 057 067 070 077 087 097 ...
the mean is a group of numbers added all together and divided by the amount of numbers that where in the group. this is the math term i have no idea what the score part is
Yes, but it's better to use an actually Survey too.
just fill it in people
90th percentile is simple another way of saying that 9% scored above and 90% scored below (the other 1% being the number 90). For example, if you take a type of standardized test in high school, if you do well, you are at the 90th percentile, meaning 90% of students scored lower than you and 9%...
1. PRF is based on population data as a whole, SRF is based on Sample data 2. We can draw only one PRF line from a given population. But we can Draw one SRF for one sample from that population. 3. PRF may exist only in our conception and imagination. 4. PRF curve or line is the...
With a fair coin, it's (1/2)^10 or 1 in 1024.
it can be used when members of the population are heterogenous
Usually, new found data that contradicts a scientific theory isn't enough to discount the entire theory. Scientific theories get formed after many data by many people that support its formation. So one disagreeing datum or "evidence" usually won't disprove it. Another way to understand this: a...
The probability of rolling a number greater than 8 on one roll of a pair of dice is 0.277777... . Let's see how we get that probability, and, though it may be a little long winded, it's important to understand what's going on. With one roll of a pair of dice, we have 36 possible outcomes. They...
The answer, rounded to one decimal place, is 25.4%. This means you have just over a one-in-four chance of choosing the freshman from the entire student population. You can figure it out for yourself by solving this division formula: (size of group you want to pick one from) ----------------...
676,000 possibilities. For case-sensitive passwords, it's 2,704,000 possibilities. Passwords consist of 2 letters and 3 digits. That's 5 places. The first and second places can each hold 1 of 26 possibilities (26 letters), and positions 3, 4, and 5 can each hold 1 of 10 possibilities. The...
Crude birth rate is how many live children are born. Crude deathrate is how many people die. Crude death minus crude birth is thenet gain (or loss) and is called the birth rate. It representswhether or not deceased people are "replaced".
If 1% of the bolts are defective, then the probability is that close to 2 bolts will be defective if there are 175 bolts. The actual probability is that 1.75 bolts will be defective, but you can not have 3/4 of a bolt. However you know there are going to be runs when you have no errors and runs when...
Answer is 6.5. Median is defined as the single number that divides a population into halves, resulting in exactly one half of the members being below (on one side of), and half being above (on the other side of) the median value. In this case, we have 20 members (values) in the population. The...
Number of combinations=59*58*57*56*55/(5*4*3*2*1)=5006386.
Qualitative test represents the substance and a quantitative testshows the amount.First Deals with descriptions, second one withnumbers
Early geographers used direct observation and modern geographers collect data using indirect observation
If the deviation is small ie if the distribution is packed close to the mean.
Assuming the die is fair, the probability of a number greater than three is a half so the EXPECTATION would be that it will land on a number greater than 3 thirty times. But, this is the expectation; the actual number could be anything from 0 to 60.
when both of your variables are continuous sets of data
Answer is 19. Explanation: we look at the entire range 99 to 131, in smaller groups. 99 has no digit 1. 100 to 109 have nine numbers with only one "1". 110 to 119 have no numbers with only one "1". 120 to 129 have nine numbers with only one "1". 130 has one number with only one "1". ...
Simple frequency distribution is a method of organizing large datasets into more easily interpreted sets. An example is organizingsample test scores by the individual scores.
importance of surveying in engineering development
Data entry is the process of transcribing or copying data from usually a paper source into a computer or information system. This is done by a person manually using specialized tools (e.g. a keyboard or scanner). Data can consist of text, numeric, audio, video, or other types. Data entry has two...
Just ask a math teacher Im sure they'll know
The mode, median, and range of a single data point such as 65 are all the data point itself, 65 in this instance.
Beta sheets consist of beta strands connected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet.
Answer 1 believe it or not, the numbers are nigh on random, although the most common, worldwide lottery numbers, (from set sources) are : 3, 9, 11, 19, 27, 38, 44 and 45 Answer 2 This will of course change depending on the date you check, so the above numbers might not be accurate right now....
Probability is 1/8 or 0.125 or 12.5% Explanation: A fair dice with six sides (numbers) has a probability of 1/2 of rolling an even number. Note: 1/2=3/6, where the dice has 3 even numbers out of six total sides. The probability of three same dice all roll an even number is the probability...
to be kind and do special things for other people
One solution is: 15 21 21 24 25 30 35. There are additional solutions.
The formula for standard deviation has both a square (which is a power of 2) and a square-root (a power of 1/2). Both must be there to balance each other, to keep the standard deviation value's magnitude similar to (having the same units as) the sample numbers from which it's calculated. If...
In a normal poker deck, a total of 26 cards are red. This is half of the cards (two out of the four suits).
a square has 4 right angles.
This statement is absolutely False due to the fact that quantitative level consist mainly in numeric situations.
Both show an amount of data, usually during a survey. One shows a number, but the other shows a percentage.