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I have a data set and need to find the uncertainty of the values how do you do it?
Wiki User
∙ 14y ago
A set of data is typically a set of numerical values. From this set you can calculate various other numbers which have meaning, like the average and range. These are callled statistics.
If it can be assumed that this set of data is taken from a large population (a sample), then we can make statement of probability regarding the population. For instance, the mean of the population is between x and y with a probability of 50%, based on the sample and other assumptlions.
I've included a couple of links that should help. If I failed to anwer your question, please clarify what you mean by "uncertainty of the values."
Wiki User
∙ 14y ago
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Will one Half Of All Data Values Will Fall Above The Mode?
No, they need not.
When you place data in a two-way table what do you need to consider before you compare the values?
The first thing to consider is whether the data are random.
What is the definition for a data series?
It would be a group of cells in Excel that have values in them. These can then be identified for use in creating charts in Excel. Different charts need data series for them to show.
How does one find the percent uncertainty in the volume of a sphere whose radius is r equals 1point56 plus or minus 0point05 meters?
-- Find the volume of a sphere with radius = 1.56 -- Find the volume of a sphere with radius = 1.61 -- The uncertainty is the difference between the bigger result and the smaller one. -- For the percent uncertainty, find out what percent that difference is of the (r = 1.56) volume. (Divide the difference of the two volumes by the volume you get with r=1.56 . Multiply the result of the division by 100, and you have the percent of uncertainty.) (Just knocking it out quickly on our calculator, we get about 9.93% uncertainty. This may or may not be correct, and you should not depend on it. But if you get the same answer, then we're probably both right.) Here's an important tool that you'll need to do this job: Volume of a sphere = 4/3 (pi) (radius)3
How do you evaluate equations?
To evaluate means to find the value. Substitute the values of the variables and calculate the value. [You may need to solve for the values of the variables first.]
How do you measure uncertainty?
To measure uncertainty, you need to know the precision of the instrument, which refers to the smallest unit that an instrument can measure. A measurement can then be represented with its associated uncertainty, such as X = (5 +/- 1) cm. In this case, the actual value can deviate from the mean (5cm) by 1cm, so the minimum and maximum values ate 4cm and 6cm respectively. The percentage uncertainty is calculated by (absolute uncertainty / mean value) * 100%.
Will one Half Of All Data Values Will Fall Above The Mode?
No, they need not.
How does a sampling error affect the interpretation of your data?
The greater the sampling error the greater the uncertainty about the results and therefore the more careful you need to be in the interpretation.
What is demand uncertainty?
You don't know how much need there is out there for your service or product.
When you place data in a two-way table what do you need to consider before you compare the values?
The first thing to consider is whether the data are random.
Why need to turn un-normalization data into 1NF?
Un-normalization of data will return the actual values of outcome, which is real value. Because we scale the data in normalization process.
What tool would be useful to help find an average of your data?
After you collect data, you need to analyze them. Perhaps you need to find the average of your data. Calculators are handy tools to help you do calculations quickly.
What is based on a person's need to search for meaning and values in life?
Existentialism is a philosophical theory that explores the search for meaning and values in life. It emphasizes individual freedom and the responsibility to create one's own meaning in a seemingly meaningless world. Existentialists believe that human beings must confront the inherent absurdity and uncertainty of existence in order to find purpose and fulfillment.
When should measures of location and dispersion be computed from grouped data rather than from individual data values?
The main need to work with grouped data was to reduce the number of data points that need to be stored and processed in calculation. With modern computers the storage and computation are not likely to be issues in many situations and so there is no need to use grouped data.
What is the definition for a data series?
It would be a group of cells in Excel that have values in them. These can then be identified for use in creating charts in Excel. Different charts need data series for them to show.
What is the formula for getting the median of the ungrouped data?
You will need to put the un-grouped data in ascending or descending order. If you have an odd number of data values the formula for the median value is (n+1)/2. Example my data in ascending order is 0, 2, 4, 5, 7, 8, 9. I have 7 data values. The median is the value (7+1)/2 = 4th value from left or right which is 5. For an even number of data values, you will need to calculate the median and it may not be a data value. It will be the mean of the two center values. Use the formula n/2 to get the left most value. Example my data in ascending order is 0, 2, 4, 5, 7, 8. I have 6 data values. The left most value I will use to calculate the median is 6/2 = 3rd. The 3rd value from the left is 4. The next value is 5. Median is (4+5)/2 = 4.5.
How do you find points on a parabola to graph them?
Select a set of x values and find the value of y or f(x) - depending on how the parabola is defined. These are the values that you need to graph.
