Math

StatisticsQ&A Librarysd02 1o1 a18. | Archaeology: Ireland The Hill of Tara in Ireland is a place of great ar-chaeological importance. This region has been occupied by people forbmore than 4000 years. Geomagnetic surveys detect subsurface anomaliesin the earth's magnetic field. These surveys have led to many significantarchaeological discoveries. After collecting data, the next step is to begina statistical study. The following data measure magnetic susceptibility(centimeter-gram-second X 10-)(Reference: Tara: An Archaeological Survey by Conor Newman, Royal IrishAcademy, Dublin).00g shO band brO9dmnnlisnUOB0U Eronb oubeomsis oabood basbt bobboul Isnutotwo of the main grids of the Hill of Tara927am baoTedbohg101 Diot sinGrid E: x variable13.205.6019.8015.0521.4017.2527.45TOA116.95 23.90 32.4040.755.1017.7528.35021Grid H: y variable11.8515.2521.3017.3027.5010.3514.90bauw to48.7025.4025.9557.6034.3538.8041.0031.25(a) Compute 2x, E, 2y, and y(b) Use the results of part (a) to compute the sample mean, variance, andstandard deviation for x and for y(c) Compute a 75% Chebyshev interval around the mean for x values and01 also for y values. Use the intervals to compare the magnetic susceptibilityon the two grids. Higher numbers indicate higher magnetic susceptibility.However, extreme values, high or low, could mean an anomaly and pos-sible archaeological treasure.(d) Interpretation Compute the sample coefficient of variation for eachgrid. Use the CVs to compare the two grids. If s represents variabilityy.1 ND VARIATIONin the signal (magnetic susceptibility) and x represents the expectedlevel of the signal, then s/x can be thought of as a measure of thevariability per unit of expected signal. Remember, a considerablevariability in the signal (above or below average) might indicate bur-ied artifacts. Why, in this case, would a large CV be better or at leastmore exciting? Explain.Question

Asked Sep 11, 2019

52 views

Step 1

**Note:**

Hey, since there are subpart questions posted, we will answer first three parts. If you want any specific part to be answered then please submit that question only or specify the subpart number in your message.

Step 2

(a).

Compute ∑x, ∑x^{2}, ∑y, ∑y^{2}.

x | y | x^2 | y^2 |

13.2 | 11.85 | 174.24 | 140.4225 |

5.6 | 15.25 | 31.36 | 232.5625 |

19.8 | 21.3 | 392.04 | 453.69 |

15.05 | 17.3 | 226.5025 | 299.29 |

21.4 | 27.5 | 457.96 | 756.25 |

17.25 | 10.35 | 297.5625 | 107.1225 |

27.45 | 14.9 | 753.5025 | 222.01 |

16.95 | 48.7 | 287.3025 | 2371.69 |

23.9 | 25.4 | 571.21 | 645.16 |

32.4 | 25.95 | 1049.76 | 673.4025 |

40.75 | 57.6 | 1660.563 | 3317.76 |

5.1 | 34.35 | 26.01 | 1179.923 |

17.75 | 38.8 | 315.0625 | 1505.44 |

28.35 | 41 | 803.7225 | 1681 |

31.25 | 976.5625 | ||

∑x= 284.95 | ∑y =421.5 | ∑x | ∑y |

Step 3

(**b**).

Compute the sample mean, variance and standard deviatio...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: (c) Write short notes on Harmonic Mean, Arithmetic Mean, Geometric Mean, Median, Mode, Range, Standa...

A: Harmonic Mean:Harmonic mean is defined as the reciprocals of arithmetic mean. That is, number of val...

Q: What are the differences between content validity, construct validity, and concurrent validity?

A: Click to see the answer

Q: For the 2010-2011 viewing season, the top five syndicated programs were Wheel of Fortune (WoF).Two a...

A: The Given Data are as follows

Q: A marketing manager for a cell phone company claims that more than 55% of children aged 8-12 have ce...

A: Null and alternative hypotheses:Here, to check whether more than 55% of children aged 8-12 have cell...

Q: number 9

A: Experimental study:In an experimental study, the researcher manipulates one variable and randomizes ...

Q: A their steals an ATM card and must randomly guess the correct pin code that consists of four digits...

A: Number of possible outcome:Every single digit can take values from 0 to 9. Thus, there are 10 possib...

Q: In a study to see if there is a relationship between students' consumption of alcoholic beverages an...

A: As per question, There is relationship between student’s consumption of alcoholic beverages and thei...

Q: Question attached. Can the proof be shown by contradiction? Any help would be appreciated.

A: You've guessed correctly. This can be proved by contradiction as you'll see in the ensuing steps.

Q: # 8,9,10,&12

A: Note:Hi there! Thank you for posting the question. However, as you have asked for 4 different questi...