 # Statistics

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

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Statistics
The Difference Between

# What is the difference between Population and sample?

Population and SamplePopulation is the area in which you are trying to get information from. Sample is a section of your population that you are actually going to survey. It is important to have a sample that will represent your entire population in order to minimize biases. For example:

You want in know how American citizens feel about the war in Iraq. Your population: The United States Your sample: 500 citizens selected randomly from each state.

Since the answers all over the US would greatly vary, it is important to have everyone in the population represented in your sample. This is usually done through random sampling, which assumes no biases seeing as the subjects were selected at random.

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# What are the benefit of inferential statistics in Psychology?

Populations, parameters, and samples in inferential statistics. Inferential statistics lets you draw conclusions about populations using small samples. Consequently, inferential statistics provide enormous benefits because typically you can not measure and entire

population.

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Statistics

# How data collected in case study method?

Case study research typically includes multiple data collection techniques and data are collected from multiple sources. Data collection techniques include interviews, observations (direct and participant), questionnaires, and relevant documents, For detailed discussions of questionnaires, interviews and observation,Questionnaires. The most common techniques used to collect data for case studies are:

1.personal interviews

2.direct observation

3.psychometric tests

archival records

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Algebra

# How many periods an 8 digit number has?

Three

The key to answering this question is knowing what the mathematical term "period" means.

Period: a period is each group of digits separated by commas in a multidigit number.

Example: 30,149,258 is an 8 digit number so each part of the number separated by a comma is 1 period. {30}{149}{258}

I hope this helped.

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Chemistry
Statistics
Percentages, Fractions, and Decimal Values

# What is the percent error formula?

Percent Error is the difference between the true value and the estimate divided by the true value and the result is multiplied by 100 to make it a percentage. The percent error obviously can be positive or negative; however, some prefer taking the absolute value of the difference.

The formula is the absolute value of the experimental value (minus) the theoretical value divided by theoretical value times 100.

% error = (|Your Result - Accepted Value| / Accepted Value) x 100

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Numbers

# What is the smallest number that rounds to 460 to the nearest tens?

455.

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Probability

# What is the probability of obtaining exactly 4 heads in 6 flips of a fair coin?

The probability of a head in one flip is 1/2.

The probability of HHHHTT is (1/2)6 = 1/64

The possible correct flips are HHHHTT, HHHTHT, HHTHHT, HTHHHT, THHHHT, HHHTTH, HHTHTH, HTHHTH, THHHTH, HHTTHH, HTHTHH, THHTHH, HTTHHH, THTHHH, TTHHHH, each with a probability of 1/64.

Total probability is 15/64.

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Probability

# What event has a probability of 0?

-- The freezing over of Hell.

-- A confirmed sighting of flying pigs.

etc.

Besides anything that is impossible, as noted above, the simultaneous occurrence of two mutually exclusive events has a probability of zero: It is raining and it is not raining, it is on and it is off, etc.

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Billboard Music Charts

# Who had 5 number 1 hits on billboard charts in his first year?

Elvis Presley

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Math and Arithmetic

# How many tens in 150?

150/10=15

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Algebra

# What is the sign of slope of the regression line if the correlation coefficient is -0.15?

The sign is negative.

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# A nominal scale variable is?

Descriptive, non-numeric, qualitative. Furthermore, they cannot be ordered (as in small, medium, large)

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# What does the median score mean?

the number that is in the middle of that particular set of numbers.

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# Is income a ratio or interval scale measurement?

Income is a ratio measure. In ratio measures, one can order categories, specify the difference between two categories, and the value of zero on the variable represents the absence of the variable. Thus, income can take on values of \$0, \$10, \$30,000, etc. Zero dollar income means the absence of income, making income a ratio measurement.

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# What depicts data in graphical form?

A graph or chart.

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# What does CL mean in mathematical terms?

It may stand for the number 150 (Roman numbers). In statistics, CL usually refers to "Confidence Level," which establishes a likelihood (typically 90 or 95%) an estimated value will fall within a given Confidence Interval (a range of estimated values). For example... [I'll get more done on this later]

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Algebra

# How many four digit numbers are made of odd number?

If you're asking for 4 digit numbers where all four digits are odd, then the lowest number possible is 1111, and the highest is 9999. You only have 5 digits to work with. The answer is: 54 - 53 = 625 - 125 = 500.

Subtract the 5 cubed for the numbers less than 1111, which are not four digits.

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Jobs for Teens
Math and Arithmetic
Statistics

# What are the applications of permutation and combination?

These are usually first studied for the purpose of computing probabilities, but they are

fundamental mathematics and come often in many different contexts.

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# What is the least four digit number?

bty head girl white girls are s fake

black girls fule and that is me.

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# How do you do a stem and leaf graph with money?

Instead of 4|5 meaning say 4.5 have it mean £4.50 so like £|pence or if in whole numbers just the same 4|5 means £45

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Algebra

# Which digit in 4.628 has the least value?

The number 8 in that question is the number with the least amount of value (0.008).

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# Who discovered the flow chart?

si lbn al-haytham

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Probability

# What is the value of z if the area between -z and z is 0.754?

Since the normal distribution is symmetric, the area between -z and 0 must be the same as the area between 0 and z. Using this fact, you can simplify this problem to finding a z such that the area between 0 and z is .754/2=.377. If you look this value up in a z-table or use the invNorm on a calculator, you will find that the required value of z will be 1.16. Therefore, the area between -1.16 and 1.16 must be approximately .754.

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English Language
Bachelors Degrees
Statistics

# How can you do double graduate?

If you are referring to graduating with a double major, then yes you can.

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