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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
Could the mean on the stem and leaf plot have a remander?
The mean can be an improper fraction but it cannot have a remainder.
Is it true that normal distribution is characterised by Standard deviation only?
No. You must have the mean ("average") as well.
What does population size means?
Statistics often requires one to make estimates of some measure (variable) about a set of units. The total number of such units is the population size.
Note that population, in this context, need not refer to people. If the study is about household expenditure on food (in some area), then the population is all households and the population size is the number of households (in that area). If the study is about diversity of insects in a field, the population may be all 1-metre squares in the field, and the size of the population will be the number of such plots - which will equal the area of the field.
Is it possible to have a standard deviation of less than one?
Anand Mehta said yes and this is correct. You will get a SD, for example, if all of the data points are less than one, or if the data points are very close together and there is not much spread in the data..
this is my assigment problem. can u help me
what percentage of matches in a pair of 100 amino acid long proteins would lead to a significant alignment score?
what is that a significant alignment score. i cant understand it.
can any one help me.
also they tell us to justify it using MATLAB
If you only have twins will the birthday paradox still hold true?
Sounds like a trick question, since twins will almost always be born on the same day.
Well bearing in mind that it may be completely out of context, I was asked the same question earlier by a friend... In his situation, I think someone had tried to call him a bastard, via SMS, with predictive text turned on.
+ and - are used to subtract and add, also to indicate if positive or negative. When the integer is positive you don't have to place a sign. When the _x wherein _ is equal to 1, you also don't have to place 1 beside x. That's stupidity.
Are there any cheats in World maths day?
Yes there is a cheat but they took it off.The cheat was you do nothing for 60sec and get 500 points.
What is mean by Distribution rights?
If you have suffiecient rights to destribute a certain meterial to the public, Ie. Copyright Free or You made it yourself, then you would have full Distribution rights.
Does a directional hypothesis force the t Test to be directional as well or vice versa?
Yes. The hypothesis comes first. That determines the nature of the test.
What are the chances of picking a red king from a deck of cards with the jokers removed?
The probability is 2/52 = 1/26
you cannot predict how many times you get heads or tails but however you can predict the probability it will hit heads or tails only which is don by multiplying 1/2 by itself 5 times
How do you find the mean for the numbers 34666?
If that's 3, 4, 6, 6, 6, add them up and divide by 5. The mean is 5.
When an odd number of data items are written in order- what is the middle item called?
It's called the median point.
