38. In a study on the estimation of visitation to the Fortifications of Quebec National Historic Site National Historic Site of Qubec, we want to evaluate the reliability of magnetic counters used to measure the variation in visitation over time. The evaluation took place over 11 days, in two shifts, to cover not only daytime attendance, but also the not only during the day, but also in the early evening. The number of people visiting the Fortifications was counted manually. The number of passages perceived by the magnetic counters was also recorded. magnetic counters. The data below is an extract from the sample.

Sx = 544 ; x2 = 18022 y = 1154 ; Ey2 = 83666 [xy = 38496 ; n = 22 b1 = 2,1794Nombre reel Nombre de percu par le personnes compteur 12 14 8 20 22 10