Study guides, Class notes & Summaries

Stats Exam 1 Pierson Questions and Answers

Stats Ch 1,2,3,4,5,6 Exam Questions And Answers

Bicycle safety- Ian Walker, a psychologist at the University of Bath, wondered whether drivers treat bicycle riders differently when they wear helmets. He rigged his bicycle with an ultrasonic sensor that could measure how close each car was that passed him. He then rode on alternating days with and without a helmet. Out of 2500 cars passing him, he found that when he wore his helmet, motorists passed 3.35 inches closer to him, on average, than when his head was bare. (Source: NY Times, Dec. 10,...

What type of variable is the type of car a person wants? a)categorical nominal b)categorical ordinal c)continuous numerical d)discrete numerical - ans categorical nominal What type of variable is the number of fans at a basketball game? a)categorical nominal b)categorical ordinal c)continuous numerical d)discrete numerical - ans discrete numerical Assume all members of the class were put into groups based on gender and a random sample of 10 students was selected from each g...

Define statistics A. Statistics encompasses all scientific disciplines in which random occurrences are analyzed. In addition, statistics references any random occurrence which is reported using percentages or proportions. B. Statistics encompasses all scientific disciplines in which percentages are used, data are analyzed, and probabilities are found. In addition, statistics references any mathematical model which is reported using percentages or proportions. C. Statistics is the science o...

statistics - Collection of methods for planning experiments, obtaining data, organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on data. set of tools and techniques used to describe, organize and interpret information or data descriptive statistics - general set of procedures used to summarize, condense, and describe sets of data values that organize and describe characteristics of collection of data, sometimes called a data set data set...

Which scale of measurement did I use? I say only that the two students are different - annominal Which scale of measurement did I use? I can say that one student scored 6 points higher than the other - anInterval Which scale of measurement did I use? I can say that one student scored higher than the other, but I can't specify how much higher - anordinal Which scale of measurement did I use?I can say that the score for one student is twice as large as the score for ...

design an experiment means - ansTo ________ to describe the overall plan in conducting the experiment. To design an experiment means to describe the overall plan in conducting the experiment. Question to ask, number of people participating Sampling error is error that results from__________ - ansusing a sample to estimate information about a population. This type of error occurs because a sample gives incomplete information about a population. Sampling bias means that_________ ...

Which of the following would be used to describe the type of statistical methods used to organize and describe the characteristics of a collection of data? - ansDescriptive statistics ___________ statistics involve collecting, organizing, and summarizing data. - ansDescriptive If your professor tells you, "if you don't start with reliable data, you'll end up with unreliable results," what does he/she mean? - ansGarbage in, garbage out. _______ statistics are often (but n...

One of the most popular and powerful analytic tools available today is ______. - ansSPSS The descriptive statistic that is also known as the average is the ____. - ansMean What term is used for organizing and analyzing information to make the information more easily understood? - ansStatistics The average age of everyone in the class is an example of what type of statistics? - ansDescriptive Which of the following would be used to describe the type of statistical methods ...