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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.
36,755 Questions
How do you calculate the sum of the deviations from the mean?
multiply the mean by the amount of numbers
What is a stem and leaf plot that shows two sets of data?
A back-to-back stem and leaf plot.
A back-to-back stem and leaf plot.
A back-to-back stem and leaf plot.
A back-to-back stem and leaf plot.
Why is removing all the outliers important?
Removing outliers is important because they can significantly skew statistical analyses and lead to misleading interpretations of data. Outliers may indicate errors in data collection or unique variations that are not representative of the overall population. By eliminating these extreme values, analysts can achieve a more accurate understanding of trends and relationships within the data, ensuring better decision-making and predictions. However, it's also crucial to carefully assess whether outliers are genuine anomalies or meaningful variations before removal.
when a probability experiment is repeated a large number of times, the relative frequency probability of an outcome will approach its theoretical probability.
If your mean is 33.7 and your standard deviation is 33.7 what is your z score?
Z-score is the x value minus the mean, all divided by the standard deviation; or z=(x-mu)/sigma. The "x" value needs to be given to answer the question.
Deviation IQ scores produce a normal curve that is shaped roughly like?
it is shaped roughly like a bell... a bell curve.
Yes
Which of the followng is a example of a binomial is it 2y or 2xy?
Neither of those expressions is a binomial.
[ 2y + 2xy ] is a binomial.
What is the 2 nine-digit numbers that have digits whose values are 50000 and 3000000?
This relates to the PRODUCT of the digits forming the number.
50000 expressed in prime factors is, 24x 55. The 9 digit number is thus 222255555 but the individual digits can be placed in any order, for instance 522555225.
3000000 is similarly 26 x 3 x 56. Altogether this involves 13 numbers but by combining the smaller primes this can be reduced to 9 digits.
23 = 8 ; 22 = 4 : 2 x 3 = 6
The number can be 846555555, but as above, the individual digits can be placed in any order.
46 x 45 x 44 x 43 x 42 x 41 = 6,744,109,680
* * * * *
That is the number of permutations. The number of combinations - where the order of the number does not matter (eg in a lottery) - is
46*45*44*43*42*41/(6*5*4*3*2*1) = 9,366,819
1155
How many 3 digits odd numbers can you make from the numbers 1 2 3 4 and 5 but no repetition?
1,2,3,4,5
123
125
135
153
145
143
215
213
231
251
235
253
351
315
345
341
321
325
421
423
425
431
435
453
451
513
521
523
543
541
What is Parametric and Non-Parametric Statistics?
In parametric statistics, the variable of interest is distributed according to some distribution that is determined by a small number of parameters. In non-parametric statistics there is no underlying parametric distribution.
In both cases, it is possible to look at measures of central tendency (mean, for example) and spread (variance) and, based on these, to carry out tests and make inferences.
What is the applications of proportions?
lots of stuff
it takes 5 lbs of sugar to make 10 quarts of moonshine. How much sugar is needed to make 20 gallons of moonshine.
A Pimp runs 3 HO's and makes $350 per night. If he runs 7 HO's how much will he make?
What is the meaning of division distribution?
Division distribution refers to the process of dividing a quantity into smaller, equal parts or groups. In mathematics, it often involves distributing a dividend among a set of divisors, ensuring that each recipient receives an equal share. This concept can also apply in various contexts, such as resource allocation or sharing tasks among individuals. Overall, it emphasizes fairness and equal distribution of resources or values.
How do you solve a stem-and-leaf plot?
First you have many different numbers.
Then you make a list down such as O | 7 meaning its 7, or 2 | 9 meaning its 29.
You set these all in order from 0- the last number you have.
