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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
What is the first thing you need to do to create a box and whisker plot of a data set?
You need to do a cumulative frequency curve
How do you work out the numbers in the sequence if given the mode mean median and range?
You cannot, with the information available. Probably not, but if you were given one more bit of information, the number of numbers in the sequence, then you might have a good chance if there aren't too many numbers in the sequence. If there is an odd number of numbers, then the median is the number such that half of the numbers are greater, and half are smaller. The mode is the number that occurs most often. The mean is the sum of all of the numbers, divided by the number of numbers. The range is the largest number minus the smallest number. For example, take this number sequence: 1, 2, 2. Given: mode=2, range=1, median=2, mean=5/3. Start with the mode. There must be at least two 2's, since it is the mode; so it must occur more often than any other number. The range is only 1; so it could go from 2 to 3, or from 1 to 2, assuming that only whole numbers are used. If the third number were 3, then the mean would be (2+2+3)/3=7/3. If the third number were 1, then the mean would be (1+2+2)/3=5/3, which matches the given mean; so the number sequence is 1, 2, 2. However, since we were not given the number of numbers in the sequence, could the sequence also be: 1, 1, 2, 2, 2, 2? The answer is, "Yes, it could be." So the bottom line is that if you were also given the number of numbers in the sequence, and it wasn't too many, you could have a good chance of figuring out the sequence from the mode, mean, median, and range. Another thing to think about is , if all of the numbers in the sequence are different, then you have multimodal rather than unimodal, and you might be given all of the numbers just from the mode. For example, the following number sequence 1, 3, 5, 7, 12, 21, 53, 77. Given the mode, mean, median, and range, could you figure out all of the numbers in the sequence. Answer: Yes, no problem, since it is multimodal, and no number occurs more often than any other number, the mode term would include all of the numbers in the sequence. How about this sequence: 1, 1, 2, 3, 12, 12, 17, 17? This sequence is trimodal; so the three modes are 1, 12, 17. If you were given that there were 8 numbers in the sequence, then you would know that there were only 2 numbers yet to determine, and from adding up the 6 numbers that you know from the mode, and knowing the mean, you should be able to determine that the two unknown numbers add up to 5. It can't be 1 and 4, since that would make 1 the only mode. It couldn't be 0 and 5, since you know the range, and that wouldn't fit. Any negative number wouldn't fit into the given range, which is 16. So you would be able to figure out that 2 and 3 were the remaining two numbers.
What if the median has two numbers left?
suggest to add the 2 and divide by 2 (average of the 2 values)
How many times does the digit nine appear from 1 to 500?
1 digit number: only 1 number
2 digits number: 18 numbers
3 digits number: 76
So there are 95 numbers containing 9.
What is 14 over 23 as a percentage?
Expressed as a percentage, 14/23 x 100 = 60.8695652173913043478260 recurring (that is, 60.86956521739130434782608695652173913043478260...) percent.
What are 10 reasons the airplane affected the world more than any other invention?
i would think such inventions as the computer and gunpowder changed the world more than airplanes even though the airplane has changed the world a lot so i think a better question is how did the airplane change the world...
1) bush planes opened up frontier areas such as Alaska, Canada, siberia, Mongolia etc that even today are so remote the airplane is only good way to get in or out of
2) made the world "smaller" by making it possible to get anywhere in the world easily within a day or two
3) in war made it possible to attack farther, faster, carry large munitions effeciently and accurately a long distance with less risk and less manpower than ever before - to have a military presence anywhere in the world quickly
4) made emergency rescue and transport better in some difficult situations or where speed is essential - has save a lot of lives
5)made it possible to transport object faster from distance land
What was the outcome of Apollo 9?
Apollo 8 was the first space mission to leave earth's orbit, which it did in December 1968, entering lunar orbit on Christmas Eve of that year, best remembered by Commander Frank Borman's reading of the opening chapter of Genesis. Apollo 8 simply orbited the moon but had no way to land there. The next mission, Apollo 9, in early 1969, was a mission designed to check out the new Lunar Excursion Module, or LEM (i.e., the lander), in earth's orbit. The LEM separated from the Apollo command module (CM) with two of the three astronauts aboard the LEM and one remaining in the CM. The LEM flew separately from the CM for a while, then re-docked with it safely. In mid May of 1969, Apollo 10 was sent into lunar orbit as a final "dress rehearsal" for the planned Apollo 11 lunar landing. Apollo 10 carried a LEM, which separated from the CM, descended to within 8 miles of the lunar surface, then re-docked with the CM. Finally, in July of 1969, the Apollo 11 mission was launched, which landed on the moon on 20July69.
Apollo3 and Apollo9 were thus the only Apollo missions to be launched that did not go to and/or land on the moon.
Though mean, median, and mode is central tendency, it is hard to put this into words.
For an example:
Your average grade in math class is an A. Though, how did you calculate that average? Well, since average means mean, you calculated that average using the method of central tendency, or in this situation, you found the mean.
In other words, central tendency is just a method (mean, median and mode) to find the average, middle, and most occurring score or number in a set of data.
I hope this helped! ;D
~Lovingless
Is the value of mean equals 35.4 and value of median equals 35 the shape of the curve skewed is?
the shape of the curve skewed is "right"
What are the Odds the number 12 will beat the number 5 in the ncaa tournament?
It's hard to put exact odds on it but the 5 seed has beat the 12 team over 67 % of the time over the last 100+ games. But as far back as I can remember (5+ years) at least one 12 has beaten a 5 seed. Over the past 20 matchups 5 seeds are only 11-9 against the 12.
You can see more in the link I provided.
When you fill out your bracket I highly suggest picking at least one 12 seed, possibly 2. As with all brackets though favorites are favorites for a reason, and don't be surprised if the underdog doesn't win every time.
Why is it so important to have a representative sample?
If the sample is not representative of the population, then the characteristics
of the sample are not the characteristics of the population.
Example:
If I want to estimate the percentage of the population that are men, and my
sample is the school's football team, my estimate would be that 100% of the
population is comprised of men. What went wrong with my survey ? Simple.
The football team is not a representative sample of the population, at least
not as regards gender.
What is the definition for defining the variable?
choosing a variable to represent one of the unspecified numbers in a problem and using it to write expressions for the other unspecified numbers in the problem.
Thiel(e)- Origin- North Germany/Dutch.
definition- Of Prussian decent Thiel(e)'s are hard working people. Usually found in Farming, Carpentry, and Military roles.
What is the largest and smallest of a percentage point in a t and f distribution?
The smallest percentage point of any distribution is 0% and the largest is 100%.
How do you convert a 7 point likert to a 10 point likert?
The correct formula is: 1.5 x (N-1) +1 where N is the score on a 7 point scale.
The place value of each digit is b times the place value of the digit to its right where b is the base for the system: whether that is binary, octal, decimal, duodecimal, hexadecimal, sexagesimal or some other value.
