Discussion Board Data Sets to Identify Two Variables

timer Asked: Feb 9th, 2019
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Question Description

In this Discussion you will use one of the Discussion Board data sets to identify two variables that are correlated and then create the best prediction equation for those variables. Finally, you will use the prediction equation you created to make a prediction for one variable (the Y variable) using a value for the second variable (the X variable).

  1. Correlated Variables: Use one of the Discussion Board data sets to identify two variables that are correlated. Use SPSS to document the correlation. For example, you may think that height and weight are correlated. From the Female Health data set there is a correlation of 0.364 between height and weight.
  2. Best Prediction equation: Use the Linear Regression procedure to generate the best prediction equation (regression equation) using one variable as the dependent or predicted variable (Y) and the other as the independent variable or predicting variable (X). To identify the dependent variable and independent variable think about which variable impacts the other variable. For example, would weight help determine our height or would height help determine our weight? In this example, the height would be the independent variable. In other words, you will use someone’s height to predict their weight using the equation: Weight (Y) = -169.839 + [5.001 *Height (X)]
  3. Making a Prediction: Use your best prediction equation to predict a value for the Y variable using a hypothetical value for the X variable. For example, what is the predicted weight of a female who is 63 inches tall? Important: you must remember and use the same measurement of the data as was used in the data set! The predicted weight of a female who is 63 inches tall is: Y = -169.839 + 5.001*63 Y = -169.839 + 315.063 Y = 145.224
  4. State the results of your prediction: For example, the predicted weight of a female who is 63 inches tall is 145.224 pounds. What is the result of your prediction?
  5. Optional: Find another variable in your data set that correlates with your dependent variable and add it as another independent variable to your regression equation to create a multiple regression equation. Post your multiple regression equation to the Discussion Board.

Tutor Answer

School: University of Virginia


Running head: DISCUSSION


Student’s Name
Institutional Affiliation



The selected data for the discussion is home dataset comprising of various variables
which include selling prices, list price, areas, acres, age, taxes, rooms, bedrooms, and the number
of baths room in a house.
Correlated Variables
Bell, Bryman, and Harley note that correlation entails statistical connection between two
variables, for instance, a relationship between the weight of a person and their height (2018). In
the evaluation of relationships between variables, researchers use Pearson correlation rHo (ρ) to
determine the strength of an association under investigation. Pearson correlation values close to

1 indicates a strong relationship, with values close to 0 indicating weak correlation. Besides, a
Pearson value of 0 implies that the variables have no correlation while a value of 1 depicts a
perfect correlation.
From the home dataset, the identified variables are selling price for a home and the house
living area in square feet. The table below illustrates the correlation between the two variables

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awesome work thanks

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