PSYCH STATS 2101 EXAM 1 QUESTIONS & ANSWERS
Independent variable - Answers -variable that is manipulated in a study
Nominal - Answers -Discrete categories without ranking
Interval - Answers -Describes ACT or SAT scores
We collect from samples, rather than the populations we're interested in - Answers -
This is the reason that we need to account for sampling error in hypothesis testing
Sample Error - Answers -The difference in the statistic you get in a population vs the
sample
These are the weaknesses of the median - Answers -It cannot be used to test a
hypothesis, it may not represent bimodal data, and it is not based on all scores
There are two types of scores we can use to transform our data when using a normal
distribution or a standard normal distribution - Answers -z scores and standard scores
This is the type of transformation that occurs when we standardized our scores from the
data we have - Answers -Linear Transformation
The biggest reason to examine your data is - Answers -to catch errors or identify
outliers
This is how you describe the mean - Answers -arithmetic average
This is the term for an expected relationship between variables - Answers -research
hypothesis
Dependent Variable - Answers -a variable whose value depends on that of another.
This is the term that describes the range of 50% of your data - Answers -Interquartile
range
This term represents "the combined probability of mutuality" - Answers -addition rule
4 stages of hypothesis testing - Answers -drawing conclusions, stating null/alternative
hypotheses, make a decision abt null hypothesis, relate it back to research hypothesis
This is the most commonly presented variability - Answers -Standard deviation
This is the central tendency that can be used to describe bimodal - Answers -Mode
Independent variable - Answers -variable that is manipulated in a study
Nominal - Answers -Discrete categories without ranking
Interval - Answers -Describes ACT or SAT scores
We collect from samples, rather than the populations we're interested in - Answers -
This is the reason that we need to account for sampling error in hypothesis testing
Sample Error - Answers -The difference in the statistic you get in a population vs the
sample
These are the weaknesses of the median - Answers -It cannot be used to test a
hypothesis, it may not represent bimodal data, and it is not based on all scores
There are two types of scores we can use to transform our data when using a normal
distribution or a standard normal distribution - Answers -z scores and standard scores
This is the type of transformation that occurs when we standardized our scores from the
data we have - Answers -Linear Transformation
The biggest reason to examine your data is - Answers -to catch errors or identify
outliers
This is how you describe the mean - Answers -arithmetic average
This is the term for an expected relationship between variables - Answers -research
hypothesis
Dependent Variable - Answers -a variable whose value depends on that of another.
This is the term that describes the range of 50% of your data - Answers -Interquartile
range
This term represents "the combined probability of mutuality" - Answers -addition rule
4 stages of hypothesis testing - Answers -drawing conclusions, stating null/alternative
hypotheses, make a decision abt null hypothesis, relate it back to research hypothesis
This is the most commonly presented variability - Answers -Standard deviation
This is the central tendency that can be used to describe bimodal - Answers -Mode
