Stats- Examining Data

Which of the following is not a measure of central tendency?

• Mean

• Median

• Variance

• Mode

• None of the above

The difference between the largest and the smallest data values is the

• Variance

• Interquartile range

• Coefficient of variation

• Range

• None of the above

The most frequently occurring value of a data set is called the

• Range

• Mode

• Mean

• Median

• None of the above

Which of the following is required to carry out a parametric procedure?

• More than two samples

• A normal distribution

• Equal sample size

• Ordinal dependent variable scores

• None of the above

Which of the following is not a measure of variability?

• Median

• Standard deviation

• Inter-quartile range

• Range

• None of the above

Which one of the following levels of measurement has a true zero?

• Ordinal

• Ratio

• Nominal

• Interval

• None of the above

Which of the following is true about Independent Samples t test?

• It is used to establish causal relationship between variables

• It is used to determine the difference between 3 or more groups

• It is used to determine the difference between the means of 2 groups

• It is used to determine the strength and direction of the relationship between variables

• None of the above

Which of the following is/are most appropriate for summarizing continuous data?

• Stem and leaf diagram

• Bar graph

• Histogram

• Box and whisker plot

• None of the above

The variance of a sample of 81 observations equals 64. The standard deviation of the sample equals

• 4096

• 0

• 656

• 8

• None of the above

Which of the following is false about a Chi Square test?

• It used to test whether or not a relationship exists between two variables

• The variables can have two or more categories

• The level of measurement of the dependent variable must be ordinal

• The level of measurement of the independent variable must be nominal or ordinal

• None of the above