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1. List one unclear concept regarding regression and provide an example from your personal or work life where regression could be used to show a relationship between two variables.
2. Correlation does not equal causation. That is very important to understand when interpreting regression. Can anyone elaborate for me?
One should never use a regression line to predict the dependent response variable when the independent value is outside of the data range of the original data set that was used to fit the line. Explain why.
a) Determine the proportion of instances that the duration was less than 240 seconds. Also express the proportion as a percent. (hint: proportion is number of successes divided by total number.)
Find the mean ______________ and the standard deviation _____________
Select a random variable to represent the category. Produce a probability mass function for that variable, and use it to compute the mean, the median and the variance of the data in the data set. Show the probability mass function, both in tabular..
If a single card is drawn from an ordinary deck of cards, what is the probability of drawing either a heart or a 6? (Answer in a fraction).
The standard deviation in cash bonuses is $15,618 and the standard deviation in annual pay is $28,077. The estimated slope of best fitting line relating x and y is?
The owner of a restaurant serving Continental-style entrees has the business objective of learning more about patterns of patron demand for the Friday to Sunday weekend time period.
A distributor of pre-washed shredded lettuce is opening a new plant and considering whether to use mechanized process or manual process to prepare the product.
Computing the probability values using normal distribution - what proportion have SAT scores greater than 550?
Should Katie conduct a between-subject ANOVA or a within-subject ANOVA? Describe your answer.
The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
In this problem set you will get some practice performing a linear regression analysis. If you use Statdisk or Excel to perform any portion of these analyses, please include the results, label them, and refer to them accordingly in your interpreta..
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