1. F

    How can I 'reverse' derive a correct dataset when I only know the mean and std dev?

    If I know the mean and standard deviation, but I don't have an original data set, is it possible to reverse calculate a data set that has this known mean and std dev? Is there an excel function I could use to do this easily? I know there could be multiple correct datasets and that's fine...
  2. D

    Which dataset has the widest spread?

    Hello I am trying to do some basic statistics homework which I need help with. I have 2 datasets, let's call them dataset A and dataset B. Now, first I had to work out the range, the interquartile range and the standard deviation for each of the datasets - piece of cake. Now, my homework asks...
  3. M

    Running time-series regressions on a dataset with large gaps: is it legitimate?

    I would like to run a simple time-series regression, to estimate the sensitivity of my dependent variable to a set of explanatory variables. However, instead of running the regression on the entire time-series, I would like to running it only over specific time periods, all stacked...
  4. M

    Probability that a value belongs to a dataset

    G-day Math help forum, once again i find myself in need of your collective knowledge... I'm utterly stuck on a problem, and have been for some time now, wherein I need to calculate the % probability that a new value belongs to a particular dataset. I only have the subject value and the values...
  5. K

    Dataset Annalysis

    Hi Everyone. Am having a problem on how to get this information from Minitab if you have it installed in your pc. You can use other program, but be specific please. thanks guys.(Nerd) Use the sample dataset supplied in “US emissions of greenhouse gases.xls” file to solve these. Calculate the...
  6. A

    Quadratic Equation for complex dataset

    This is really simple for your average person but not me. Basically I have a dataset involving production of x amount of units and y total costs. I want to be able to draw a graph, produce an equation and plot the line of best fit on the graph. How do I find the equation for y on x...
  7. B

    looking for suitable statistical tool for low-frequency dataset

    hi, i have a problem for which i hope to get some help here. i have a time-series dataset that, say, runs from 2000 to 2009 (10 years). for each year, i have measured this quantity called T several times, whereby the number of T does not exceed 10 per year. what i wish to do is to find out...
  8. D

    Need to get quadratic equation of dataset from excel graph

    I have a set of data that needs to be graphed in Excel and I require the quadratic formula derived from the data. I haven't been able to figure out how to do this from my internet research. Here is the spreadsheet RapidShare: 1-CLICK Web hosting - Easy Filehosting I know that I need to graph...
  9. N

    [SOLVED] Read the dataset into R

    Hi, recently I had installed R2.9.1 and need it to complete my assignment. However I was unable to even access to the required data. The file name is "textbook" and was saved as CSV file type. I entered > read.csv("textbook.csv") \*it return the following*\ Error in file(file, "r") : cannot...
  10. T

    How do i find another dataset with same standard deviation but different mean?

    Lets say you have 5, 10, 15, 20, 25. The standard deviation is 7.07 and mean is 15. What am i missing to answer the question in subject?
  11. S

    Dataset from same distribution.

    1.What does it mean by points of same distribution? 2.Also i needed 2 data sets each consisting of something like 8 points each from same distribution and different distribution? 3.Are these from same distribution? Dataset1: 1,2,3,4,5,6,7,8 Dataset2: 2,4,6,8,10,12,14,16 Please let me know...
  12. V

    Dataset for Regression Analysis

    I am looking for some cool datasets (some problem that would interest everyone) to demonstrate the following drawback of regression modeling: 1. Regression doesn't capture the limiting behavior of a process - the response goes non-negative even it is not practically possible Are there any...
  13. P

    [SOLVED] Determine equation based on dataset

    I am currently working on something for my personal site. Most things I can figure out myself, but I'm having trouble with this problem. I need to determine an equation that's based on the following dataset: x=1/4 y=4 x=sqrt(2)/4 y=2 x=1/2 y=1 x=sqrt(2)/2 y=1/2 x=1 y=1/4...