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Essay written for assignment 3 week 3 of the class.

1. When calculating a Pearson's correlation coefficient, it is necessary that both variables have approximately normal distributions. - True 2. The variable "Group assignment" is an example of what level of measurement? - Nominal 3. Statistics that allow for inferences to be made about a population from the study of a sample are known as: - Inferential 4. Which measure of variability is used most often in conjunction with the mean? - Standard deviation 5. Data that are categor...

1. Information collected in a numerical form is called - quantitative 2. Which measure of central tendency is at the highest point on a graph? - mode 3. Correlation coefficient tests allow you to determine if a cause-and-effect relationship is present. - false 4. Data that are categorical but can be rank-ordered in a meaningful way are called: - ordinal 5. If the mean is to the left of the median, what is true? - The distribution is negatively skewed. 6. Which measure of variability is...

1. This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. - Fisher's exact test 2. It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. 3. True or False - False 4. A Z score of +/-1.96 is equivalent to these values on a normal distribution. - +/-2 standard deviations 5. When examining the relationship between two interval or rat...

1. This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. - Fisher's exact test 2. It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. True or False - False 3. A Z score of +/-1.96 is equivalent to these values on a normal distribution. - +/-2 standard deviations 4. When examining the relationship between two interval or r...