# Using Excel to calculate descriptive statistics

Not what you're looking for?

Download the Excel file for HW3, which contains two sets of data for two variables.

1. For the first set of paired data (sheet 1):

a) Make a scatterplot of the data.

b) Use Excel functions to find the means and standard deviations of each variable.

c) Working in Excel, calculate the correlation coefficient (r) by creating columns of calculations (unpack the formula).

d) Find the regression equation relating the variables. Use the first column as the explanatory variable and the second as the response variable.

e) What y-value would you predict from x = 58 in the data set? Why?

2. For the second data set (sheet 2), do the following:

a) Make a scatterplot of the data.

b) Use Excel functions to find the means and standard deviations of each variable.

c) Find the regression equation relating the variables. Use the first column as the explanatory variable and the second as the response variable.

d) What y-value would you predict from x = 58 in the data set? Why?

##### Purchase this Solution

##### Solution Summary

The expert examines using Excel to calculate descriptive statistics.

##### Solution Preview

Hello,

Thanks for asking BrainMass. Please see the attachments for the solution.

Regression equation

Download the Excel file for HW3, which contains two sets of data for two variables.

1. For the first set of paired data (sheet 1):

Answers

a) Make a scatter plot of the data.

b) Use Excel functions to find the means and standard deviations of each variable.

x y

Mean 41.95 245.3

Standard Deviation 18.2799142 130.6127664

Please see the excel spreadsheet.

c) Working in Excel, calculate the correlation coefficient (r) by creating columns of calculations (unpack the formula).

The correlation between X, Y is given by the formula

The details are given ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.