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Changping Wang

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May 2003
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  • Responses: 2959

Education

  • BSc , Wuhan Univ. China, 1989
  • MA, Shandong Univ., 1992

Subjects

  • Mathematics
  • Statistics
  • Physics

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I need help matching statistical symbols and definitions

I need your HELP with the matching of STATISTICAL SYMBOLS & DEFINITIONS

DEFINITION

1.The average of the squared deviation scores from a distribution menas.
2. Midpoint in the distribution of numbers.
3. It has to do with the accuracy and precision of a measurement procedure.
4.Examines if a READ MORE »

Statistics / Hypothesis Testing » 74518

Are the Three Treatment Means Equal?

Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level.

a. State the null hypothesis and the alternative hypothesis.
b. What is the decision rule?
c. Compute SST, SSE, and SS total.
d. Complete an ANOVA table.
e. State your READ MORE »

Statistics / Correlation and Regression Analysis / Partition of Variance / Analysis of Variance » 48867

Statistics: Standard Error and Sampling Size

Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. The X column indicates the number of client c READ MORE »

Statistics / Hypothesis Testing / Frequentist Inference / Confidence Interval » 50144

Diet Statistical Analysis

A physician who specializes in weight control has three different diets she recommends. As an experiment, she randomly selected 15 patients and then assigned 5 to each diet. After three weeks the following weight losses, in pounds, were noted. At the 0.05 significance level, can she conclude that th READ MORE »

Statistics / Correlation and Regression Analysis / Partition of Variance / Analysis of Variance » 59646

The Grand Strand Family Medical Center

The Grand Strand Family Medical Center is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, one in the Little River Area and the other in Murrells Inlet. The Quality Assurance Department wishes to compare the mean waiting time for READ MORE »

Statistics / Hypothesis Testing » 61784
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