What is the variance of {-7, 42, -5, 1, 6, -3, 4, -2, 17, 53, -2, 4, 7, 88}?
Kareem Mejia
Answered question
2022-11-04
Answer & Explanation
jennasyliang4tr
Beginner2022-11-05Added 15 answers
Enter the data value in a column (or row)
and use the VARP(range) (for population variance) or the VAR(range) (for sample variance) function.
Method 2: Manual Calculation
Find the sum of the data values.
Find the mean value (by dividing the sum by the number of data values)
For each data value calculate the difference between it and the mean.
For each data value calculate the square of the difference between it and the mean.
Calculate the sum of the squares
For population variance, divide the sum of the squares by the number of data value; for sample variance, divide the sum of the squares by (1 less than the number of data values).
Use Population Variance if the data represents all entities in the universe of discourse.
Use Sample Variance if the data represents a random selection of entities from the universe of discourse.
New Questions in High school statistics
Read carefully and choose only one option
A statistic is an unbiased estimator of a parameter when (a) the statistic is calculated from a random sample. (b) in a single sample, the value of the statistic is equal to the value of the parameter. (c) in many samples, the values of the statistic are very close to the value of the parameter. (d) in many samples, the values of the statistic are centered at the value of the parameter. (e) in many samples, the distribution of the statistic has a shape that is approximately NormalConstruct all random samples consisting three observations from the given data. Arrange the observations in ascending order without replacement and repetition.
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1) y=−2x−3
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3) y=2+3x
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The frequency distribution table for the digits is as follows:
Which two digits appear for 3 times each?
A) 1, 7
B) 2, 6
C) 5, 9<br<D) 3, 8How to write
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