STATS Study guides, Class notes & Summaries

Stats Final Exam Study Guide 2024. The proportion of the variation in the dependent variable y that is explained by the estimated regression equation is measured by the - CORRECT ANSWER coefficient of determination The least squares criterion is - CORRECT ANSWER min In a residual plot against x that does not suggest we should challenge the assumptions of our regression model, we would expect to see - CORRECT ANSWER a horizontal band of points centered near zero The difference betwe...

STATS PRACTICE EXAM QUESTIONS 2024. Eldrick manages wildlife samples for Ducks Unlimited. Two samples of duck populations at a migratory site are shown in the table below. Which statement about the samples is true? - CORRECT ANSWER Eldrick should take another sample because there is too much variability in the two samples. A restaurant serves three types of omelettes. Surveys were taken of the last two days of orders and are displayed in the table below. Approximately 200 omelettes are s...

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_________ ...