How many combinations of three out of thirty one?
If the sequence of the three makes a difference, there are (31 x 30 x 29) = 26,970.
If the sequence of the three doesn't matter, there are (31 x 30 x 29) / (3 x 2 x 1) = 4,495.
Whatr does the number 30 mean?
The number 30 is one more than 29 and one less than 31, it is also 6 lots of 5, 3 lots of 10 or 2 lots of 15
What is the median of 10 13 14 27 35 42?
There are six numbers, so the median is the mean of the third and fourth (when ordered).
Median = (14+27)/2 = 41/2 = 20.5
Assume a coin is tossed 100 times what is the probability of seeing 50 heads?
If the coin is fair and balanced, like Fox, then the probability is 50%.
What is the largest three digit number using numerals 4 and 8?
Using only 8's & 4's and using each atleast once...884. Using all numerals and including 8 once and 4 once...984.
It is acceptable (and quite common) to have multiple values for the mode.
Examine the following data sample:
Number of pets per family on Main Street
1,1,1,1,1,2,2,2,2,2,3,3,3,4,4,5,9
In this case, the mode is {1, 2}
How do you find the maximum and minimum values when the average is known?
You would need more information.
177
What does current research indicate about narcolepsy?
Researchers are hopeful that new treatments will releive the genetic mutation. Also, a number of drugs are being tested to improve daytime sleepiness.
What is the chance of pick 4 black cards out of a deck?
1/2*25/51*24/50*23/49
if cards are not replaced
Use Binomial theorum to write the full expansion of 2x-5 to 5th power?
The answer is
32x5+-400x4+2000x3+-5000x2+6250x+-3125
What type of application would you use if the data set is non-numerical?
Non-parametric statistical methods.
Is sociology more than statistics?
Sociology is the study of human behavior in a social environment and how social interaction relates to development of mental and physical abilities, as well as future success and failure. Statistics are near irrelevant to sociology because it is a very intuitive field of study. So yes, sociology is much more than statistics.
Why would someone want to assume that your sample data represents a population distrubution?
Most people take samples so that they may make estimates of parameters of interest: mean, variance, etc for the whole population. For such an estimate to have any validity the sample data must be assumed to represent a population distribution. Otherwise any conclusions based on the sample are valid only for the sample: hardly worth the effort!
Where the axes of the coordinate plane intersect?
(10,20)? Im not quite sure. That's what my classmate said.