Weather reports typically report the daily high and low temperatures, the average temperature for the day, and the record low and high temperatures for a given day. Given that today's high is 70, the average high for this date is 60, the record low for this date is 30, and the record high for this date is 85, what additional information (i.e., descriptive statistic(s)) would you like to have in order to determine if the 70-degree temperature is a significant departure from the average temperature for that date of the year in that particular location? For this exercise, other variables such as humidity, other locations, other days of the year, etc. will not be considered.
250words Q1) Weather reports typically report the daily high and low temperatures, the average temperature for the day, and the record low and high temperatures for a given day. Given that today's high is 70, the average high for this date is 60, the record low for this date is 30, and the record high for this date is 85, what additional information (i.e., descriptive statistic(s)) would you like to have in order to determine if the 70-degree temperature is a significant departure from the average temperature for that date of the year in that particular location? For this exercise, other variables such as humidity, other locations, other days of the year, etc. will not be considered. 250words Q2)How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test? Why is the use of standardized scores such as z-scores of value to researchers seeking to interpret test results? How might a researcher use a norm-referenced test to classify individuals as low, medium, or high on a particular characteristic that a test is intended to measure? Explain your reasoning. 250words Q3) How is sample size related to statistical tests and outcomes? Give a specific example. Why is it important to plan the sample size before collecting data? 4) Fill in the following for a possible study with one independent variable (IV) with two conditions/treatments and a dependent variable (DV) that is measured on a continuous scale (interval or ratio): Independent variable = ______________ Condition A = ______________ Condition B = ______________ Dependent variable = _______________ How do you know this DV is measured on a continuous scale? Now, how would you word the null hypothesis for your sample study? How would you word the alternative hypothesis for your sample study? What alpha level would you set to test your hypothesis? Why?
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here