The results of the single group observation may be generalized _____

The results of the single group observation may be generalized _____
 
  a. only to the group studied c. to similar groups and similar behaviors
  b. to similar groups d. to the entire population

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The only value of random sampling is to achieve a representative sample.
 
  Indicate whether the statement is true or false

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Which of the following is NOT considered to be a pre-experimental design?
 
  a. single group observation c. posttest only one group study
  b. factorial study d. pretest posttest study

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Data are an indispensable part of scientific method.
 
  Indicate whether the statement is true or false

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When reporting the results of a chi-square analysis, one should also report which descriptive statistics?
 
  a. bar graph c. both a and b
  b. table d. either a or b, but not both

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Intuition is often used as part of scientific method.
 
  Indicate whether the statement is true or false

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If computing the chi-square statistic by using a computer program, the contingency table procedure is called _____.
 
  a. correlation c. crosstabs
  b. chi statistic d. descriptive chi

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The method of authority is opposed to the scientific method.
 
  Indicate whether the statement is true or false

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Does chi-square allow a researcher to conclude that one variable causes the other?
 
  a. no
  b. only when the variables are perfectly correlated
  c. not unless the expected frequency of one of the cells in the contingency table is <5
  d. yes

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Observational studies involve the use of independent variables.
 
  Indicate whether the statement is true or false