LET' PRACTICE. Given set A =(15,19,23, 25, 37,39, 43}. Find the following a. lower quartile b. upper quartile c. interquartile range of the data set

The stem-and-leaf plot show a spring 2019 pre-calculus class' scores for their first exam: 3 3 4 2,9,9 5 3,5,5 6 1,3,7,8,8,9,9 7 2,3,4,8 8 0,3,8,8,8 9 0,2,4,4,4,4,6 10 Round each answer to two decimal places. Find the mode of the scores for the first exam.

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Interest rates Here’s a plot showing the federal rate on 3-month Treasury bills from 1950 to 1980, and a regres-sion model fit to the relationship between the Rate (in %) and Years since 1950 (www.gpoaccess.gov/eop/).a) What is the correlation between Rate and Year?b) Interpret the slope and intercept.c) What does this model predict for the interest rate inthe year 2000?d) Would you expect this prediction to have beenaccurate? Explain.

Oakland passengers revisited In Chapter 8, Exercise15, we created a linear model describing the trend in thenumber of passengers departing from the Oakland (CA)airport each month since the start of 1997. Here’s theresidual plot, but with lines added to show the order ofthe values in time:a) Can you account for the pattern shown here?b) Would a re-expression help us deal with this pattern?Explain.

Fat (9) 31 39 19 34 43 39 35 Calories 580 680 410 590 | 660 640 570 8. Make a scatter plot of the data. 700 650 * 600 550 500 450 400 O 10 20 30 40 50 x Fat (g) Desertee the COFrelation Use technology to find the equation of the best-fitting line for the data. Graph the best-fitting line for the data on the scatter plot. Predict the number of calories in a hamburger that contains 34 grams óf fat. Calories

The amygdala is a brain structure involved in the processing and memory of emotional reactions. In a research project, 10 subjects were shown emotional video clips. They then had their brain scanned with positron emission tomography (PET) and their memory of the clips was assessed quantitatively. Here are the relative amygdala activity and the memory score for each subject: The relationship is (Linear or curved) and ( Moderate, weak, or strong)? The direction of the realtionship is (Negitive or positive)? The amygdala and memory 3/4: The correlation coefficient between relative activity and memory score is: (round your answer to 3 decimal places)

Interpret the graph. Is there a linear relationship between angle of rotation and reaction time? Describe the relationship.

A hydrologist is interested in studying the influence of rainfall on runoff in a drainage basin. Rainfall and runoff are measured during 20 rainfall events. Model the relationship. What are the variables and the type of measurement for these variables? slope (numerical) and itercept (numerical) dependent variable (nominal) and independent vatiable (nominal) Rainfall (total mm) and Runoff (liters/36 hours) geographic location (lat/long), area of watershed (hectares), and substrate type (rock/soil/vegitation) rainfall (numerical) and runoff (numerical)

I can do the scatter plot diagram I just need help With identifying the Y axis and the X access and the Form directions strength  And outlier