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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
1/8 or 12.5%
What does a z-test and simple z have in common?
A z-test is a statistical test which compares a test statistic - the z-score - which is based on data with the standard normal distribution. If used appropriately (very often it isn't) it will indicate the probability, under a null hypothesis, of observing an outcome at least as extreme.
A simple z is a letter of the alphabet. In algebra it is used to denote variables; in coordinate geometry it is usually used to denote the third orthogonal direction for the coordinate space.
What is the median to 3 50g 5 100g 6 150g?
The median is the value that is in 'the middle'. That is, half the values fall below it, half above it. There are a total of 3 + 5 + 6 = 14 sample values. There is no 'middle' value exactly since there are an even number of values.
Both the 7th and the 8th largest value are 100 g. Their average is 100 g. Therefore, the median of this sample is 100 g.
What are the definitions of these words mean median range?
Range- Amount of number between two numbers, 5-10 you basically just minus 10 with 5= 5
Mean- The average of a number (add all together then divide by how many numbers there are),2+7+10+8=20 divided by 4=5.
Median- the meddle number (but first put them all in order) for example,
(5 17 12 18 23 16 19) put in order (5 12 16 17 18 19 23) Median is the middle number which is in bold.
Standardising the observation ensures that the mean is 0 and the standard error is 1. Otherwise the plot could be located anywhere and be concentrated or spread out.
Why are the numbers in this order 8 5 4 9 1 7 6 10 3 2?
For English speaking people, they are in alphabetical order.
Can you show me an example of the average or mean in a set?
Consider the set (1, 2, 3, 4, 5) There are five elements in that set and they total 15. Fifteen divided by five gives us the mean, which is 3.
How many four digit numbers can be made with the date 012213?
Allowing numbers that start with zero, the answer is
6!/(2!*2!) = 720/(2*2) = 180
Yes, since fundamental frequency is based on the standing wave that forms, by changing the amount of liquid you change the length of the medium the standing wave is in, thus the perceived frequency.
What are all the uses for percentages?
Cooking, voting,graphs,sums measuring, cutting food, test scores, handling money, calculating sale tax.
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