STAT 200 Study guides, Class notes & Summaries

Variables correct answers attributes of cases Cases (Units) correct answers objects/subjects in the data collection n = # Spreadsheets correct answers display raw/original data Cells correct answers (on a spreadsheet) contain data Rows correct answers (on a spreadsheet) contain cases Columns correct answers (on a spreadsheet) contain variables Categorical Variable correct answers divides/places cases into *GROUPS* or *CATEGORIES* records *WORD RESPONSES* or serves as an *ID...

What summary statistics measure the variation (spread) in a data set correct answers Standard deviation, range, interquartile range What indicated data that is skewed to the right? correct answers The mean is much smaller than the median Which of the following correlation values indicated the strongest linear relationship between two quantitative variables? a. r=0.50 b. r==0.30 c. r=0.00 d. r= -0.65 correct answers D The value of a correlation is reported by a researcher to be r=-0....

At a tennis tournament a statistician keeps track of every serve. The statistician reported that the mean serve speed of a particular player was 104 miles per hour (mph) and the standard deviation of the serve speeds was 8 mph. Assume that the statistician also gave us the information that the distribution of the serve speeds was bell shaped. What percentage of the player's serves are expected to be between 104 and 112 mph? correct answers 34 The five number summary for a set of data was as ...

A researcher collects data on the poverty rate and teen birth rate for the 50 states of the United States. What is the sample size for the dataset? A) 2 B) 10 C) 25 D) 50 correct answers D Which of the following statements is true? A) Opinion about death penalty (favor or oppose) is a categorical variable. B) Number of coins in someone's pocket is a categorical variable. C) Number of text messages a person sends in a day is a continuous variable. D) Body weight (in pounds) is an ...

On a recent survey, Stat 200 students were asked: How low must the temperature go (in degrees Fahrenheit) for you to stop wearing shorts when you are out and about, such as going to class. It was also determined whether the student was a female or male. The goal is to compare the responses for the two genders. In this instance, which is true about the two variables? correct answers the explanatory variable is categorical and the response variable is quantitative Which is untrue about the ...

uses methods including collection, presentation, and characterization of a set of data to describe features of that data, creates a "picture" of that data using tables, charts, box plots, histograms, as well as number such as means and percentages correct answers descriptive statistics uses methods for estimating and drawing conclusions about a population characteristic based on info in a subset or a sample drawn from that population correct answers inferential statistics collection of d...

STAT 200 Lab 10 Answer

STAT 200 LAB 7 -Lesson 7: Common Distributions Completed with accurate solutions STAT 200 LAB 7 -Lesson 7: Common Distributions STAT200 Elementary Statistics LAB 7 1 Finding Probabilities on a Normal Distribution [25 points total] a. Use Minitab Express to construct a standard normal distribution to find the proportion of the curve below z = -1.80. Copy + paste your distribution here and clearly identify your final answer. [6 points] b. Use Minitab Express to construct a normal distributi...

STAT 200 STAT200 WEEK 7 HOMEWORK with accurate SOLUTION (UMUC) STAT 200 STAT200 WEEK 7 HOMEWORK SOLUTION (UMUC) Anquanette Sterling STAT Week 7 Homework #1) 2 Points 2. The formula for a regression equation is Y’ = 2X + 9. a. What would be the predicted score for a person scoring 6 on X? Y = 2(6) + 9 = 12+9 = 21 b. If someone’s predicted score was 14, what was this person’s score on X? 14 = 2X + 9 -9 -9 5 = 2X 2.5 = X #2) 2 Points 6. For the X,Y data below ...

STAT 200 Week 2 Homework Problems STAT 200 Week 2 Homework Problems Completed with Accurate solutions