1. A researcher found that the relationship between the appraised value of a hou
ID: 3131061 • Letter: 1
Question
1. A researcher found that the relationship between the appraised value of a house (in thousands of dollars) and its age (in years) could be summarized by the regression equation: Appraised value = 400.8 - 2.5 * age. Interpret the value of the slope.
2. An investor asks: How are stock prices influenced by interest rates? Identify the explanatory and response variables.
3. The graph below shows the relationship between average daily temperature and the amount of ice crwam sales at an ice cream stand. Based on the graph, what is the best prediction for the amount of ice cream sales on a day when the average temperature is 20 degrees celisus?
Sorry I was unable to copy and paste the graph. Is there a way for me to attach the graph?
1. A researcher found that the relationship between the appraised value of a house (in thousands of dollars) and its age (in years) could be summarized by the regression equation: Appraised value = 400.8 - 2.5 * age. Interpret the value of the slope.
2. An investor asks: How are stock prices influenced by interest rates? Identify the explanatory and response variables.
3. The graph below shows the relationship between average daily temperature and the amount of ice crwam sales at an ice cream stand. Based on the graph, what is the best prediction for the amount of ice cream sales on a day when the average temperature is 20 degrees celisus?
Sorry I was unable to copy and paste the graph. Is there a way for me to attach the graph?
4. In New York State there is a fairly strong positive correlation between principals. salaries and the reading scores of their students. (This is true.) Upon learning this, a politician recommends that principals' salaries be increased because this will cause students' reading scores to increase. Good idea? (Use your knowledge of statistics to explain your answer.)Explanation / Answer
1)
for each value of age you will have a decrease of 2.5 in the value of appraised
2)
explanatory variable : stock prices
responces variable : interest rates
3) Need more information you can add in another question as an image
4)
Yes thats a good idea since the correlation between the variables is strong positive
if we increase the salarie of principals we will have a increase in the scores of students
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