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Stat 101 Exam 1 with Questions and Answers Statistics ANSWER About understanding data and making informed decisions Need to examine and understand variability to make decisions Our goal: describe, quantify, explain, and/or predict variability in data Data Table ANSWER An arrangement of data...

STAT 101 Exam 3 with Questions and Answers The process of adding or subtracting a constant from every value of a quantitative variable ANSWER Shifting The process of multiplying or dividing all the values of a quantitative variable by a constant ANSWER rescaling The process of determining t...

Stat 101 Exam 2 with Questions and Answers Normal distribution ANSWER symmetric, bell-shaped curve we have seen for almost all of our bootstrap and randomization distributions Central Limit Theorem ANSWER For a sufficiently large sample size, the distribution of sample statistics for a mea...

Stat 101 Chapters 4-6 Exam with Questions and Answers Summary Statistic ANSWER Numerical summary of a variable, such as its median or average. Median ANSWER Value in the middle of a sorted list of numbers; the 50th percentile Quartile ANSWER The 25th or 75th percentile. Interquartile Ran...

Stat 101 Exam Study Set with Questions and Answers A research study in Michigan asked students in grades 4-6 from three randomly chosen school districts about their goals. The students could choose from: Make Good Grades, Be Popular, or Be Good at Sports. The researchers also recorded the sex of ...

STAT 101 Chapter 6 Exam with Questions and Solutions Choose the correct words to describe the scatterplot below: The form of the relationship is linear . The strength of the relationship is strong . The direction of the relationship is negative . There are no outliers. ANSWER linear stron...

STAT 101 Chapter 16 HW with Questions and Answers An ABC News Poll in 2004 surveyed 1,501 randomly selected U.S. adults and asked if they believed it is more enjoyable to be married or single. In the survey, 75% of the people responded that they believed it is more enjoyable to be married than si...

STAT 101 Chapter 15I HW with Questions and Answers Experts believe that 70% of adults in the United States believe it is more enjoyable to be married than single. An ABC News Poll in 2004 surveyed 1,501 randomly selected adults in the United States and asked if they believed it is more enjoyable ...

STAT 101 Chapter 5 HW with Questions and Answers The z-score for a particular observation is z = 0.4. This means the observation is ANSWER 0.4 standard deviations above the mean. The z-score for a particular observation is z = -1.2. This means the observation is ANSWER 1.2 standard deviations ...

Stat 101 Chapter 3 with Questions and Answers Display the distribution of a quantitative variable with; ANSWER Histogram, stem-leaf plot, and dot plot Distribution is described in terms of; ANSWER Shape, center and spread. Symmetric ANSWER Distribution has roughly the same shape reflected a...

Stats 101 Unit 3 Quiz with Questions and Answers Rolling a die where the chance of a rolling a 1 through 5 is 15% each and the chance of rolling a 6 is 25% is a random event. True or False? ANSWER True; A random event is one where the outcome is unknown but the long term behavior is known. Events...