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UB STA 119 - Homework 1 (2)

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HW1 (2) Name ______________________________ Class Number _________________ 1. Fill in the table.What our research dataseems to tell usWhat the truth really is(Unknown to us)Was an Error Committed? Action that we would takebased on our dataThe data suggests the medicine is helpful.The medicine IS NOT helpful.We think a useless medicine is helpful.Give it to our patients, thatwon’t be helped.The data suggests the medicine is not helpful.The medicine IS NOT helpful.No Error has been made. We came to the correct conclusion.The useless medicine will not be distributed to futurepatients.The data suggests the medicine is helpful.The medicine IS helpful.No Error has been made. We came to the correct conclusion.We will distribute the useful medicine to our patients.The data suggests the medicine is not helpful.The medicine IS helpful.We will miss out on this good medicine. We lose the chance to help.We will not distribute this good medicine because wedid not conclude that it was good.2. What does discrete data have in common with continuous data? They are both numbers (Quantitative Data).3. What is the difference between discrete data and continuous data. Discrete data takes on specific values with gaps between the values. For us, this is usually integers. Continuous data can be any value in an interval.4. What does nominal data and have in common with ordinal data. They are both non-numbers (Qualitative Data). 5. What is the difference between nominal data and ordinal data. Ordinal data has a natural order to the possibilities and nominal data does not.6. What does a parameter do? Parameters summarize the population. An example would be the population mean (average). While we do not know the population average it does exist.7. What does a statistic do? A statistic summarizes the data (sample). An example would be the data mean. We can always calculate our data statistics since we have access to our data. Later we will use our statistics to estimate population


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