Exam 11: Introduction to Data Analysis

Random heterogeneity of subjects can result in increased risk of ____.

If a researcher sets alpha at .05,the probability of a Type I error ____.

​Figure TB 11-2 -What type of graph is shown above?

Data analysis has important implications for conclusion validity.

The level of statistical significance is also called the _______________ level.

Conclusion validity is relevant whenever you are looking at relationships between variables.

A(n)_______________ is a summary of the frequency of individual values or ranges of values for a variable.

The written description of the data that describes each variable and indicates where and how it can be accessed is called the _______________.

The ____ is the most frequently appearing score.

Create a frequency distribution table for the following set of scores and calculate the mean,median,and mode: 3,5,16,13,9,14,13,12,1,10,18,18,15,4,12,5,12,14,16,13,20,11,1,12,12

The ______________ is equal to the highest value is a distribution minus the lowest value.

Conclusion validity applies to quantitative but not qualitative research.

Tests to detect statistically significant differences are part of _______________ statistics.

​Figure TB 11-1 -What type of graph is shown in the accompanying figure?

Violation of the assumptions underlying statistical tests can result in increased risk of ____.

Increasing the level of significance in order to increase power results in increased risk of ____.

The general term for the spread of the values around the central tendency is ______________.

Statistical power is related to ____.

A low strength signal is associated with ____.

The automated method for checking data-entry accuracy in which data are entered once and then a second time,with the software automatically stopping each time a discrepancy is detected is referred to as the _______________ system.