Purchase Solution

Variance and Standard Deviation of Weights

Not what you're looking for?

Ask Custom Question

Collect data consisting of at least 20 values. (You may also create a data set with reasonable values for your variable).
The values are given represent the weights of the 20 kids in the first grade class room:
36, 36, 37, 37, 38, 38, 41, 41, 41, 42, 42, 42, 42, 43, 44, 44, 44, 45, 45, 45,
a.Define the variable - the weight in pounds - it is a dependent variable.
b.Find the mean, median, mode, variance, and standard deviation for your data.
Mean - 41.15
Mode - 42
Variance =

Please help me figure out the variance and standard deviation to this scenario.

Purchase this Solution
Solution Summary

The variance and standard deviation of children's weights in a first grade classroom are provided.

Solution Preview

Variance and Standard Deviation
Collect data consisting of at least 20 values. (You may also create a data set with reasonable values for your variable).
The values are given represent the weights of the 20 kids in the first grade class room:
36, 36, 37, 37, 38, 38, 41, 41, 41, 42, 42, 42, 42, 43, 44, 44, 44, 45, 45, 45,
a.Define the variable - ...

Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

View More Free Quizzes
Related BrainMass Solutions

  • Portfolio Weights, Expected Returns, and Standard Deviation

    436204 Portfolio Weights, Expected Returns, and Standard Deviation See attached file. #4.

  • Stats

    Listed below are wights (kg) of trees given no fertilizer and trees treated with fertilizer and irrigation, Find the range, variance and standard deviation for each of the two samples, then compare the two sets of results.

  • tocks

    Suppose that the correlation coefficient between A and B was -1. What are the weights of the minimum variance portfolio?

  • Accounting: Calculating the expected return and standard deviation of a portfolio.

    (A, B) * standard deviation of A * standard deviation of B Variance = standard deviation^2 --> standard deviation = square root of variance Given: E(A) = 0.15 E(B) = 0.25 Standard deviation of A = 0.1 --> Variance of A = 0.01 Standard deviation

  • Portfolio return and risk

    Please see attached file This provides an example of computing expected return, standard deviation, portfolio return and risk, and portfolio weights to minimize variance.

  • Percival Hygiene Portfolio Combinations Risk and Return

    whose expected return is 9% and standard deviation is 10% Thus the expected return can be improved and that too with the lowering of risk Calculation of expected return and standard deviation: Asset Weights (x)

  • Ratio of two population variance

    A random sample of 16 items from Plant A has a standard deviation of 12 milligrams and random sample of 25 items from Plant B has a standard deviation of 15 milligrams.

  • Portfolio Returns, Standard Deviation, and Correlation

    61710 Calculation of expected return and standard deviation of a portfolio that is composed of two stocks with different weights as well as the correlation between the two stocks.

  • Mean, variance, standard deviation and probabilities

    , and variance b) If you took samples of the weight of cherries in 25 cherry pies, what mean and standard deviation would you expect to find from the weights of all cherries in the pies?

View More Related Solutions