Draw a scatter plot of the data

Assignment Help Basic Statistics

Reference no: EM131322601

Imagine that you are a college professor. You notice that fewer students appear to attend class on Friday afternoons when the weather is warm than when it is cold outside. To test your hunch, you collect data regarding outside temperature and attendance for several randomly selected weeks during the academic year. Your data are as follows:

Temperature (degrees F)	Attendance (number of students)
58	85
62	83
78	64
77	62
67	66
50	86
80	60
85	82
70	65
75	62

a. Draw a scatter plot of the data.

b. Do the data appear to be roughly linear?

c. Do you see any evidence of outliners?

d. From examining the scatter plot, does there appear to be a correlation between temperature and attendance? H so, is it positive or negative?

e. Calculate r for these data.

f. Is this correlation statistically significant?

g. Interpret r. What does r tell you about the relationship between temperature and attendance?

Reference no: EM131322601

Questions Cloud

Partial correlation between gender and punctuality : Calculate the partial correlation between gender and punctuality while removing the influence of watch-wearing.

Create a formula in excel to do the calculations : The first two-week sprint, during the sprint review meeting, you show interested stakeholders the questionnaire you distributed to students (about membership fees and how to store materials) and discuss the findings. Students indicated that they ..

Hazardous conditions surrounding an incident : "A report must do more than just identify at-risk acts or hazardous conditions surrounding an incident."

Explain the use of formative and summative assessments : Explain the Use of formative and summative assessments in the Birth to Age 5/Pre-K and K to Age 8/Grade 3 classrooms;

Draw a scatter plot of the data : Draw a scatter plot of the data.- Do the data appear to be roughly linear?- Do you see any evidence of outliners?

Investment under consideration has payback of eight years : An investment under consideration has a payback of eight years and a cost of $880,000. Assume the cash flows are conventional. If the required return is 10 percent, what is the worst-case NPV?

Encounter a mountain range : When a hurricane moves inland, it may encounter a mountain range. Describe and discuss what happens as the hurricane moves closer to the mountain range. What happens to the intensity? What results in the most damage (ie: wind, rain, storm surge, e..

Experimental study of the effects of failure on self-esteem : People who believe themselves internally controlled are more likely to ... In an experimental study of the effects of failure on self-esteem, self-esteem is the ...

Calculate the real rate of return on the stock : You purchased 1,000 shares of stock for $128 per share exactly one year ago. During the year, the stock paid a $2.60 dividend per share and the current stock price is $101 per share. The inflation rate the last year was 2%. Calculate (i) the dividend..

User Account

All Pages