Exam 13: Data Analysis: a Users Guide to Statistics

__________ assume some interval level of measurement and a normal population.

Which of the following are summary statistics that describe the typical,middle,or average score?

Identify and discuss the two types of statistics and provide examples of each.

Which of the following is a test of the independence of the relationship between nominal or categorical variables?

The mode,expressed as X,is simply the sum of the scores divided by the number of scores.

Which of the following refers to the simplest measure of central tendency and is simply the most frequently occurring score?

__________ assesses whether the differences between observed and expected values could be due to chance or are statistically significant.

Which of the following is a measure of central tendency that is applicable to ordinal ranked)data?

__________ are distribution free statistics in which few assumptions are made regarding the normality of the population.

__________ or standard deviation units measures the deviation from the mean relative to the standard deviation.

The standard deviation and the related statistic variance are far less useful than the range.

The level of statistical significance is set by the investigator in terms of the amount of risk or willingness to be in error in rejecting the null hypothesis assuming a significant relationship).

Which of the following refers to an error of assuming that relationships proven true of groups are true of individuals?

Which of the following refers to a bell-shaped curve that describes a variety of phenomena?

__________ is a test of the independence of the relationship between nominal or categorical variables.

The null hypothesis generally states that there is no difference between the groups being compared,or that there is no relationship in the general population,or that any observed differences are due to random error.

Which of the following is a highly useful statistic in which plus or minus one standard deviation always equals 68 percent of a normal curve?

Nonparametric statistics assume some interval level of measurement and a normal population.

The median or midpoint)is a measure of central tendency that is applicable to ordinal ranked)data.

The __________ and the related statistic variance s2)are far more useful than the range.