Purchase Solution

Standard Deviation of doctors' ages

Not what you're looking for?

Ask Custom Question

The following data show the age distribution of the top 14 doctors in the emergency faculty of a local hospital.

Age Frequency

35-39 2
40-44 2
45-49 1
50-54 3
55-59 4
60-64 2

Using the computational formula, calculate the Standard Deviation of doctors' ages

Purchase this Solution
Solution Summary

Help with figuring the Standard Deviation of doctors' ages is given.

Solution Preview

Hi

This question uses a frequency distribution to describe the age scores. This gives 2 scores in the first age range, 2 scores in the second age range and so on.

By convention the upper and lower boundaries of the first interval are 34.5 and 39.5. The upper and lower boundaries of the next interval are 39.5 and 44.5, and so on. These are exact numbers that define the range that includes the whole numbers given as the bottom and top of each range (Howell, ...

Purchase this Solution
Free BrainMass Quizzes
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.

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

  • Mean, Median, Mode, Distributions and Standard Deviations

    Assuming that these ages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places. ?

  • variance testing

    194271 Variance Testing & Hypothesis Testing The standard deviation of the ages of a sample of 21 executives from the northern states was 8.4 years; while the standard deviation of the ages of a sample of 30 executives from southern states was 12.8 years

  • Population standard deviation

    375137 Population standard deviation problem Population standard deviation The ages (in years) of the 6 employees at a particular computer store are 32, 35, 31, 27, 32, 35 Assuming that these ages constitute an entire population, find the standard

  • Standard Normal Distribution

    256226 Value of the Standard Normal Distribution Suppose the average age of a passenger train car is 19.8 years. If the distribution of ages is normal and 18% of the cars are older than 21.6 years, find the standard deviation.

  • Normally Distributed Age of Doctors

    155962 Normally Distributed Age of Doctors The average age of doctors in a certain hospital is 43.0 years old with a standard deviation of 8.0 years.

  • Fire Department Volunteers

    1808 Calculating probability using mean and standard deviation. The ages of the volunteer members of fire department are normally distributed with a mean of 36 and a standard deviation of 6.

  • Statistics: test of means, test of proportions

    average salary was $160,000 per year with a standard deviation of $25,000.

  • t test for age of car

    196376 Students at the University of Arkansas randomly selected 217 student cars and found that they had ages with a mean of 7.89 years and a standard deviation of 3.67 years.

  • Hypothesis Test for a Sample Mean

    210745 Hypothesis test for a sample mean The mean wages paid to Americans between the ages of 45 and 64 across all demographics in the United States is $38,740 with a standard deviation of $156.

View More Related Solutions