Boxplot Study guides, Class notes & Summaries

1. Question: An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. 2. Question: The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the variance. See Attached Excel for Data. Use the Excel function to fin...

Population - The entire group that is the target of interest, not just people. Eg, "the population of 1 bedroom apartments" Sample - A subgroup of the population. Eg, "the 1 bedroom apartments with dishwashers." Steps in the statistics process - 1. PRODUCE DATA (by studying a sample of the population) 2. EXPLORATORY DATA ANALYSIS (Summarize data.) 3. PROBABILITY ANALYSIS (Determine how the sample may differ from the population.) 4. INFERENCE (draw conclusions) Data - pieces of info ab...

1. Question: An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. 2. Question: The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the variance. See Attached Excel for Data. Use the Excel function to fin...

1. Question: An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. 2. Question: The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the variance. See Attached Excel for Data. Use the Excel function to fin...

Boxplot an image that has min, Q1, median, Q3, max Histogram A graphical representation -- bars, measuring the frequency within each interval Skewed right Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right Measures of center Median, the mean (and mode) Measures of spread Range, IQR & standard deviation Standard Deviation Rule 68% of the data are within 1 standard deviation, 95% are within 2, 99.7 are within 3 standard deviations from the mean. For skewed...

Introduction to Statistics Notes Latest Verified Review 2023 Practice Questions and Answers for Exam Preparation, 100% Correct with Explanations, Highly Recommended, Download to Score A+ Covers basic graphs and descriptive statistics for both categorical and quantitative variables This is what you would do as a “preliminary analysis” for a variable. Recall: a data set can have multiple variables in it. These chapters focus on mostly univariate (single variable) analyses. There is on...

Boxplot an image that has min, Q1, median, Q3, max Histogram A graphical representation -- bars, measuring the frequency within each interval Skewed right Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right Measures of center Median, the mean (and mode) Measures of spread Range, IQR & standard deviation Standard Deviation Rule 68% of the data are within 1 standard deviation, 95% are within 2, 99.7 are within 3 standard deviations from the mean. For skewed...

WGU C955 PROBABILITY AND STATISTICS EXAM / 50 QUESTIONS AND 100% CORRECT ANSWERS LATEST GUIDE 2024. 2 / 6 1. Boxplot: an image that has min, Q1, median, Q3, max 2. Histogram: A graphical representation -- bars, measuring the frequency within each interval 3. Skewed right: Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right 4. Measures of center: Median, the mean (and mode) 5. Measures of spread: Range, IQR & standard deviation 6. Standard Deviation Rul...

1. Question: An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. 2. Question: The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the variance. See Attached Excel for Data. Use the Excel function to fin...

Probability and Statistics, WGU C955 Questions & Answers (Graded A) Boxplot - ANSWER-an image that has min, Q1, median, Q3, max Histogram - ANSWER-A graphical representation -- bars, measuring the frequency within each interval Skewed right - ANSWER-Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right Measures of center - ANSWER-Median, the mean (and mode) Measures of spread - ANSWER-Range, IQR & standard deviation Standard Deviation Rule - AN...