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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
A type of selection where the normal distribution is pushed apart into two separate peaks?
Bimodal Distribution
Whats the mean of a set of data and explain how to find it?
take the sum of all the numbers ∑x
and divide it by the number of numbers in the data set. nor ∑x/n
Predict the ones' digit of 4 to the 29 power?
4 x 4 = 16.
If you multiply the last digit by 4: 6 x 4 = 24 (ends with 4).
Continue multiplying by 4, and you see that the last digit will always alternate between 4 and 6 - 4 for the odd powers, and 6 for the even powers.
So, in this case, the answer is 4.
If a shape has 14 corners and 10 faces how many edges would it have?
By Euler's formula for the relationship between the number of Vertices, Faces and Edges of a polyhedron,
V + F = E + 2 so 14 + 10 = E + 2 so that E = 22.
What is the probability of rolling a 4 on a cube after a 4 has been rolled the last five rolls?
If you are counting each roll separately (if they are independentdent) then 1/6.
Does the median have to be a number?
Yes, the median is always a number. For qualitative data, use the mode for a measure of center.
He has 10 green marbles.
Identify 4 possible outcomes of a bio logical agent attack?
contaminate equipment
overwhelm med staff and resources
force personnel to use protective equip that degrades mission effectiveness
incapacitate and /or kill large number of personnel
It is a circular chart which is divided into at least two parts.
Jobs that have to do with math?
There are many, but here are some:
- Actuary
- Statistician
- Math teacher/professor (obviously)
- Engineer
- Scientist
What two sets of data are being compared by a scatter gram?
Values on the x axis is compared with values on the y axis and the line of best fit indicates a possible trend of the data collated.
It is 50/100 = 1/2
Where is the marble in Bugdon 2?
A lot of people have a difficult time getting over the red walls. This seems to mostly affect people on slower computers since timing is critical, and at slow frame rates it is hard to do the jump. The best way to get over these walls is to simply jump on top of one of the wooden blocks. Then jump again and start flying at the apex of the jump. You should now be able to just flyover the red wall.Many people have a hard time finding the marble. The passage to the marble is narrow, but there is a line of acorns marking the entrance. Just keep going to the end of the passage and the marble will be there.The correct way to do the marble bowling is to drop the marble and kick it into the batteries, however, you can also get a running start and just drop the marble. That will send it coasting into the batteries too, and this method is often more accurate than kicking.The slot car racing is really a no-brainer. Just hold down the throttle until the race is over - you'll win every time.
What is the probability of drawing 2 similar cards from a deck of 5?
The answer depends on how many of the 5 cards are similar.
What is the probability of rolling a 4 or a 12 on the first roll of a pair of dice?
The probability of rolling a 4 is 3/36 .
The propbability of rolling 12 is 1/36 .
The probability of rolling either one is 4/36 = 1/9 = 111/9 percent.
What is the most descriptive center of a data set?
There is no such thing. Different measures are best in different circumstances.
If asked what the "central" colour of a car was, neither the mean nor median can even be calculated. You would not add a red car and a blue car to average at a purple car! On the other hand, you would have to be pretty lucky to find a mode for a continuous variable.
Similarly, one can come up with scenarios where the median or the mean beat the other two measures of central tendency hands down.
