State if these variables would be expected to have a positive, negative, or no association.A. Number of schools and population size.o PositiveNegativeNo associationB. Income and number of health conditions.Positiveo NegativeNoassociationC. Time spent meditating and stress level.Positiveo NegativeNo associationD. Number of pets and amount of money spent on printer ink.PositiveNegativeo No associationE. Life expectancy and death rate.PositiveNegativeo No association

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What is the difference between relative frequency and cumulative frequency? Choose the correct answer below. A. Relative frequency of a class is the number of observations in that class, while cumulative frequency of a class is the sum of all the frequencies. B. Relative frequency of a class is the proportion of the data in that class, while cumulative frequency of a class is the number of observations in that class. C. Relative frequency of a class is the percentage of the data that falls in that class, while cumulative frequency of a class is the sum of the frequencies of that class and all previous classes. O D. There is no difference between the two.
True or false. When drawing a scatter diagram, the explanatory variable is placed along the vertical axis.
Determine each variable's type - quantitative (discrete or continuous) or categorical. This will help determine which graphical display to use. See the extra sheet in the Excel file. Create a histogram with one of the quantitative variables. You decide the appropriate number of bins. Copy and paste to a Word/pdf document. Comment on the histogram's center, variability, shape, and any unusual values. Create a pie chart or bar chart with one of the categorical variables. Copy and paste to your Word/pdf document. Comment on what you see in the pie/bar chart. Create another visualization of your choice. Comment on the variable and visualization you selected and what relationships, patterns, or insights you found.
Lesson 7Q8 Identify the well-known consistent estimators. A.Sample mean B.Sample variance C.Sample mean and sample variance D.Population mean and population variance
Exhibit 9-5 n = 16 HO: u z 80 x = 75.607 Hạ: u < 80 o = 8.246 Assume the population is normally distributed. 3. Refer to Exhibit 9-5. The test statistic equals .53 -2.131 -.53 2.131
Christine is a sales manager for a car rental company. She has a scatterplot with data regarding the years of experience of sales representatives and percent of satisfied customers. What information would the scatterplot below indicate? Select all that apply. 100 90 80 70 50 40 30 20 10 1 3 5 6 7 Years of Experience of Salesperson O Satisfaction rate is the independent variable. O Satisfaction rate is the dependent variable. O Years of experience is the independent variable. O Years of experience is the dependent variable. O Christine should consider customer satisfaction training for her more novice representatives. O There is a positive correlation between years of experience and customer satisfaction. O There is a negative correlation between years of experience and customer satisfaction. O There is no correlation between years of experience and customer satisfaction. Percent of Satisfied Customers
1. Identify whether the variable in the information below is qualitative or quantitative. A nurse collects blood from kids and measure their blood-sugar content. This measure of blood-sugar concentration is a variable. a. quantitative b. qualitative c. qualitative as well as quantitative d. neither qualitative nor quantitative 2. Identify the technique for gathering data in the study below. A pharmaceutical firm wants test the effectiveness of a new drug. It wants to know if the new drug is significantly stronger than the conventional drug. This is a/an study. a. observational b. experimental c. census d. sampling 3. You want to plot a frequency graph of daily rainfall, with rainfalls (inches) on the horizontal axis. You will use a a. bar chart b. histogram c. cumulative frequency d. best fit line 4. Frequency of categorical data are displayed using a a. bar chart b. histogram c. time series graph d. best fit line
Which among the following is considered as health outcome? DISSATISFACTION DESTITUTION IMPROVED HEALTH SEEKING BEHAVIOR GETTING VACCINATED AFTER HEALTH EDUCATION A. I and II B. I, II and III C. I, II, III, IV D. III AND IV
Which of the following is not equivalent to the other three? Choose the correct answer below. O Dependent variable Independent variable 000 O Predictor variable O Explanatory variable
A researcher wishes to examine the physical health, including if they have been diagnosed with diabetes and high blood pressure, of family caregivers. The researcher also wants to examine the caregivers lived experiences. What kind of data should the researchers collect from their study participants? Quantitative Qualitative Both quantitative and qualitative Qualitative or quantitative
What is an inherent zero? Describe three examples of data sets that have inherent zeros and three that do not. A. An inherent zero is a value that the variable can take. B. An inherent zero is a zero that implies none. OC. An inherent zero is a zero that occurs in the data set naturally. Select three examples of data sets that have inherent zeros below. A. Maximum wind speed during a hurricane B. Average age of college students in years C. A student's level of happiness measured from 0 to 10 D. Temperature in degrees Fahrenheit E. Average IQ score of a high school class F. Average monthly precipitation in inches Select three examples of data sets that do not have inherent zeros below. A. Average IQ score of a high school class B. A student's level of happiness measured from 0 to 10 C. Average monthly precipitation in inches D. Temperature in degrees Fahrenheit E. Maximum wind speed during a hurricane F. Average age of college students in years
Some research situations are summarized below. For each situation, identify all variables.Then, for each variable, note the level of measurement AND whether it is an independent or dependent variable. a.Ahealth researcher is interested in studying patient compliance (whether or not patients take the medicine their doctor prescribes). She surveys 800 diabetic patients, and finds compliance to be linked to patient age, education, gender, and socioeconomic status. b. A market researcher is hired by Target to see how customers buying habits have changed before and after COVID. The researcher studies how much each customer spent (in $s), how frequently they visited the website each month, how frequently they visited the store each month. They report that, since March, customers are spending less, visiting the website more frequently, and shopping in person less frequently.

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