PSYC*1010 (Questions + Answers) Solved

What is the role of descriptive statistics as it relates to the goals of the scientific method? a)Descriptive statistics are important in operational definition. b)Descriptive statistics summarize empirical observations. c)Descriptive statistics are what you use when you are generalizing from sample to population and determining why the results occurred. d)Descriptive statistics are used in deductive logic. e)More than one of the above is true (Descriptive statistics can accomplish the functions described in several of the alternatives answers listed above.) - Answer-b)Descriptive statistics summarize empirical observations. What is 46% of 52? Express the result to two decimals of accuracy. - Answer-(0.46)x(52)=23.92 What is the role of inferential statistics as it relates to the goals of scientific methods? - AnswerInferential statistics are used when generalizing from sample to population Veronique is trying to find a specific way to measure the concept "self esteem" in her study. She chooses to measure it using a published questionnaire that is designed to measure self-esteem (high scores = high self-esteem). Veronique is - Answer-Operationally defining a variable In a grade 1 class there were 50 girls and 50 boys. Which of the following is constant in this group? - Answer-Grade How do you calculate proportion frequency in a simple frequency distribution? (Note: f is the abbreviation for frequency). - Answer-f/n A researcher was carrying out a study looking at the correlation between the number of hours of sleep per night and GPA. What kind of graph should be used here to show the relationship between the two variables? - Answer-A scatterplot In a study on frustration, a researcher had participants rate their feelings on a 1-9 scale, where 1 was not at all angry and 9 was extremely angry. From what you learned in class, what scale of measure is this? - Answer-intervalA sample of 500 students had debt ranging between $146 and $10,586. You have been asked to make a professional looking frequency distribution from this debt data. Using the technique taught in this class, what would be true of your frequency distribution ? (Hint: Sept 22 lecture video.) - Answer-The lowest apparent limit on the lowest interval would be 0 and there would be 11 categories At the Olympics, figure skaters are given Gold, Silver, and Bronze medals to indicate 1st, 2nd, and 3rd place. This is an example of - Answer-ordinal scale measurement Which of the following types of study has a measured IV and a measured DV? - Answer-Quasiexperiment One of the goals of the scientific method is to generalize from an observed sample to a population. Which of the following contributes to achieving that goal? - Answer-Inferential Statistics Which of the following descriptive statistics is the best measure of consistencies or inconsistencies between the scores of individual among the group that is measured? - Answer-Standard Deviation A group of 1000 individuals were asked how many minutes per day people spent using the internet. The responses varied between 51 minutes and 534 minutes. If you used the technique shown in class, what would be true of your frequency distribution? - Answer-The interval size would be 50 Xavier noticed that everyone in his university residence at Guelph was taking their courses online. From this he concluded that all University of Guelph students were taking their courses online. His conclusion that all University of Guelph students are taking their courses online is an example of his use of - Answer-Inductive logic In her study, Trish randomly assigned students to have either 3 hours or 8 hours of sleep the night before a spelling quiz and she measured the mark out of 10 on the quiz. Trish predicted that participants who had 8 hours a sleep would have a higher average quiz score than those with only 3 hours of sleep. This last statement (the prediction) is an example of - Answer-An experimental hypothesis Marcie is a young child and in terms of height her Z score is -1.5 as compared to children of her age. For children of her age, the average height is 120 centimeters with a standard deviation of 10. What is Marcie's height? - Answer-105 centimetersAn exam was given that had a mean of 150 and a standard deviation of 30. Martine received a score of 129 on that exam. The professor wanted to scale the grades so that the mean for the exam would be 65 and it would have a standard deviation of 15. What would Martine's mark be on this scaled exam? - Answer-54.50