Purchase Solution

Statistics: Find Mean and Standard Deviation of Sample Data

Not what you're looking for?

Ask Custom Question

For the data in the following sample:
8, 1, 5, 1, 5

A. Find the mean and the standard deviation
B. Now change the score of x = 8 to X = 18, and find the new mean and standard deviation.
C. Describe how one extreme score influences the mean and standard deviation.

Purchase this Solution
Solution Summary

The solution finds the mean and standard deviation of sample data.

Solution provided by:
Sandhya Sharma, MSc
Education
  • BSc, Meerut University
  • MSc, Meerut University
  • MPhil, Institute of Advanced Studies
  • MSc, AIT
Recent Feedback
  • "Perfect, thank you so much!!! I will definitely request you in the future! You are amazing!"
  • "Thank you. "
  • "Thank you so much I have two more that I need your help with if your available."
  • "Thank you, I was wondering why you rejected me the first time."
  • "Thanks again."
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.

Measures of Central Tendency

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

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.

View More Free Quizzes
Related BrainMass Solutions

  • Sample Mean, Variance, Standard Deviation and Quartiles

    Using the box and whisker method identify potential outliers. (Careful data is given in descending order!) - Using Data ? Descriptive Statistics ? Summary statistics find mean and standard deviation.

  • Parameter and Statistic Measurements

    A statistic (singular) is the result of applying a function (statistical algorithm) to a set of data. What are statistics used for? To calculate 1 Sample mean and sample median 2. Sample variance and sample standard deviation 3.

  • Distribution of Temperatures - Descriptive and General Statistics

    b) Find the standard deviation of the monthly low temperatures by applying the formulas (without using computer software). c) If the above data was a sample, what would be the sample standard deviation?

  • Test of hypothesis

    Caim: The mean IQ score of statistics professors is less than 120 sample data: n=40, mean of the values in a sample = 117, assume that the standard deviation = 14 and the significance level = 0.05 Calculate the test statistic ( round to nearest

  • IQ Report

    The sample data given here are typical of those obtained from other studies. a. Find the mean and standard deviation of the sample of older twins. b. Find the mean and standard deviation of the sample of younger twins. c.

  • Standardized Test Statistic

    Data sets are dependent find d A 37 35 54 50 38 B 35 31 32 42 29 d =2 4 22 8 9 mean d=9 Standard deviation of d = 7.81 sample size = 5 standard error = 7.81/5^0.5 = 3.493 test statistic = 7.81/3.493=2.236 4.

  • Observational study and some terms on design of experiment

    In details, if we want to find sample standard deviation, we compute sum of squared difference between mean and each data and then divide by sample size minus one.

  • Findind confidence interval for true mean

    201699 Finding confidence interval for true mean Find the confidence interval for the true mean assuming that each sample is from a normal population and we know the standard deviation: The given data is: Xbar = 14 Standard deviation = 4 N=5 Use

  • Descriptive statistics

    a) Find the standard deviation of the monthly low temperatures by applying the formulas (without using computer software). b) If the above data was a sample, what would be the sample standard deviation?

View More Related Solutions