Intermath: Investigation: Data Analysis: Probability

What is the probability of selecting a multiple of 5 from a group of randomly selected integers?

***This is a generated version***NOT the arithmetic version****

Please look at the following spreadsheet for this information. The random numbers on the spreadsheet are generated from the spreadsheets random number generator. I will have it generate random numbers up to 1000. The "1" will represent a multiple of 5. The an empty cell will represent those numbers that are not multiples of 5.

I preformed 10 trials. (Every time the enter key is hit, the random numbers change.) I counted the number of "1" out of 100 random numbers produced. This gave me my probability out of 100. The 10 trials were averaged, and the probability was taken from this average. The probability was .185 that a random number would be a multiple of 5. Try it and you may get something different.

330 | 1 | Trial 1: | 24 | |

239 | Trial 2: | 15 | ||

284 | Trial 3: | 14 | ||

902 | Trial 4: | 23 | ||

599 | Trial 5: | 22 | ||

812 | Trial 6: | 19 | ||

237 | Trial 7: | 19 | ||

473 | Trial 8: | 22 | ||

925 | 1 | Trial 9: | 14 | |

570 | 1 | Trial 10: | 19 | |

149 | Average Trial: | 19.1 | ||

741 | Probability out of 100 trials 19.1% | |||

388 | ||||

61 | ||||

542 | ||||

322 | ||||

428 | ||||

147 | ||||

268 | ||||

351 | ||||

507 | ||||

416 | ||||

776 | ||||

762 | ||||

701 | ||||

715 | 1 | |||

67 | ||||

418 | ||||

295 | 1 | |||

554 | ||||

803 | ||||

107 | ||||

477 | ||||

584 | ||||

243 | ||||

367 | ||||

309 | ||||

177 | ||||

112 | ||||

243 | ||||

237 | ||||

326 | ||||

913 | ||||

949 | ||||

385 | 1 | |||

47 | ||||

527 | ||||

171 | ||||

780 | 1 | |||

630 | 1 | |||

671 | ||||

502 | ||||

473 | ||||

581 | ||||

764 | ||||

98 | ||||

814 | ||||

264 | ||||

180 | 1 | |||

849 | ||||

409 | ||||

775 | 1 | |||

870 | 1 | |||

744 | ||||

716 | ||||

256 | ||||

545 | 1 | |||

50 | 1 | |||

66 | ||||

559 | ||||

957 | ||||

700 | 1 | |||

531 | ||||

26 | ||||

794 | ||||

188 | ||||

524 | ||||

271 | ||||

826 | ||||

738 | ||||

766 | ||||

769 | ||||

884 | ||||

133 | ||||

461 | ||||

105 | 1 | |||

114 | ||||

167 | ||||

58 | ||||

357 | ||||

928 | ||||

797 | ||||

959 | ||||

123 | ||||

284 | ||||

113 | ||||

98 | ||||

491 | ||||

164 | ||||

734 | ||||

15 | :Total |