Purchase Solution

Compute the range, the standard deviation, and the variance.

Not what you're looking for?

Ask Custom Question

30. Determine the estimated mean of the following frequency distribution.
Class Frequency
0 up to 5 2
5 up to 10 7
10 up to 15 12
15 up to 20 6
20 up to 25 3

93. Each person who applies for an assembly job at Carolina Furniture, Inc. is given a mechanical aptitude
test. One part of the test involves assembling a dresser based on numbered instructions. A sample
of the lengths of time it took 42 persons to assemble the dresser was organized into the
following frequency distribution.
Length of Time
(minutes) Frequency
2 up to 4 4
4 up to 6 8
6 up to 8 14
8 up to 10 9
10 up to 12 5
12 up to 14 2

Compute the range, the standard deviation, and the variance.

Attachments
Purchase this Solution
Purchase this Solution
Free BrainMass Quizzes
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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

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

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.

View More Free Quizzes
Related BrainMass Solutions

  • Calculating mean, range, variance and standard deviation

    Standard deviation=square root of variance=(12.3)^0.5=3.507135583 Solution depicts the methodology to calculate mean, range, variance and standard deviation for the given sample.

  • Measures of Data Spread

    152283 Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions below. Find range, IQR, SIQR, variance, standard deviation.

  • Population

    Compute the range for this data. c. Compute the variance and standard deviation. d. Assume that these data represent a sample rather than a population. Compute the variance and standard deviation.

  • Descriptive statistics

    223332 Compute range, standard deviation, and variance For this exercise compute the range, the standard deviation and the variance. refer to the following frequency distribution.

  • Descriptive statistics

    223333 Compute range, standard deviation, and variance. For this exercises compute the range, the standard deviation and the variance. refer to the following frequency distribution.

  • compute and interpret the range, and the mean deviation

    487203 compute and interpret the range, and the mean deviation Using the age of people compute and interpret the range, the mean deviation, the variance, and the standard deviation of the ungrouped age data. 2.

  • Mean, Range, Variance, Standard deviation

    189104 Mean, Range, Variance, Standard deviation The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10. a. Compute the mean for this sample. b. Compute the range for this sample. c.

  • Statistics: Test freshmen and juniors for stressful events

    Freshmen data set: 8, 9, 10, 9, 10, 7, 8, 10, 10, 80 1. compute the mean 2. compute the median 4. compute the range 5. compute the standard deviation (you may use a spreadsheet if used include in your work) 6. what is the variance?

  • Computing mean, median, mode, variance, standard deviation a

    The smallest value is 26 and the largest value is 62. Range = 62 - 26 = 36 Computing mean, median, mode, variance, standard deviation and range.

  • Range, Interquartile Range, Variance, Standard Deviation

    Compute the range and interquartile range. 2. Compute the sample various and sample standard deviation. 3.

View More Related Solutions