Intro to stats Study guides, Class notes & Summaries

In which of these cases should the median be used? When the data has small variance When data has no outliers When the data has extreme values When the data has nominal values RATIONALE Since the mean uses the actual values in the data, it is most affected by outliers and skewness. So, we only want to use the mean when the data is symmetric as a measure of centrality. When the data is skewed or has extreme values, the median is a better measure since it is not as sensitive to the...

5 characteristics of problem solving - Answer-systematic, logical, empirical, reductive, replicable repicable - Answer-instruction manual, recording the process of research so it can be repeated reductive - Answer-information into insight; using data to establish relationships logical - Answer-correct procedures for proper evaluation to draw conclusions empirical - Answer-data on which to base decisions (objective observations) systematic - Answer-data collected on identified variables that...

Which of the following is a property of binomial distributions? All of the observations made are dependent of each other. There are exactly four possible outcomes for each trial. The expected value is equal to the number of successes in the experiment. The variable of interest is the total number of successes or failures for a given number of observations. RATIONALE Recall that for the binomial distribution we are concerned with an event occurring (successes) or not occurring (fail...

A hunter is practicing his aim using a practice target. He takes 5 shots. All 5 shots hit the target, but they do not hit or surround the bullseye. In addition, all 5 shots are very spread apart on the target. Classify the hunter's accuracy and precision. Low accuracy and low precision High accuracy and low precision Low accuracy and high precision High accuracy and high precision RATIONALE Since the arrows fall away from the bullseye and are spread out we would classify this as...

very spread apart on the target. Classify the hunter's accuracy and precision. Low accuracy and low precision High accuracy and low precision Low accuracy and high precision High accuracy and high precision RATIONALE Since the arrows fall away from the bullseye and are spread out we would classify this as low accuracy and low precision. CONCEPT Accuracy and Precision in Measurements 2 A team of researchers want to measure the distance covered while driving compared to a car'...

Intro to Stats MCCC Ch. 5.

Intro to Stats MCCC Ch. 5

AQA A-level SOCIOLOGY Paper 2 Topics in Sociology 2024 (intro) What are sociologists interested in?ANSWER- government changes to education - how pupils are labelled - pupils home background - How pupils experience school e.g. subject choice (social class) Key stats?ANSWER- 55% likely to get 5 A-Cs at gcse compared to 88% it on FSM - 91% gcse achievement if in high professional work opposed to 66% in routine work (social class) Outside school / Home background (external)?ANSWERSugge...

Intro to Stats: Module 4 (A+ graded 100% verified) First let's take a look at precipitation over the course of a year in High Springs ( a small town north of Gainesville, near the Sante Fe River). (Please note that they start the year at O - October.) Which statement best describes the center for the boxplots? Correct Ans: The medians for the summer months of June,July, August, and September are higher than for the other months. The annual maximum flows for pre and post 1974 have ...

Homework and Lecture notes for Unit Four of Intro to Statistics at Columbia School of Social Work.