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8th Edition

Frederick J Gravetter + 1 other

Publisher: Cengage Learning

ISBN: 9781133956570

Chapter 1, Problem 21P

Textbook Problem

Two scores, *X* and *Y*, are recorded for each of *n* = 4 subjects. For these scores, find the value of each expression.

**a. **Σ*X*

**b. **Σ*Y*

**c. **Σ*XY*

Subject |
X |
Y |

A |
3 |
4 |

B |
0 |
7 |

C |
-1 | 5 |

D |
2 |
2 |

Essentials of Statistics for the Behavioral Sciences

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