Casio STAT 2 Instrukcja Użytkownika Pobierz pdf (Strona 8)

3 (2000 Second Semester)

During the 1950’s, radioactive material leaked form a storage area near Hanford,

Washington, into the Columbia River nearby. For nine counties downstream in Oregon, an

index of exposure X was calculated (based on the distance from Hanford). Also the cancer

mortality Y was calculated (deaths per 100,000 person-years, 1959 – 1964). This data is

summarised as follows:

County

Radioactive exposure

Cancer Mortality

Clatsop

8.3

210

Columbia

6.4

180

Gilliam

3.4

130

Hood River

3.8

170

Morrow

2.6

130

Portland

11.6

210

Sherman

1.2

120

Umatilla

2.5

150

Wasco

1.6

140

Calculate the linear regression coefficients b

and b

for this data.

Interpret the linear equation.

Solution:

03.9,45.118

 bb

XY 03.945.118



That is, Estimated cancer mortality

 03.945.118

Radioactive exposure

7500,239800.1440.42.287,4.41

 xyyyxx

1 2 3 4 5 6 7 8

CASIO fx-82AU PLUS 1
635.2,485.2,22.5,9  2
225.1,0.3,9  3
Practice: 4
0.510; 1.046 5
15.56,12.4605 7
XY 03.945.118 8

Komentarze do niniejszej Instrukcji

Brak uwag

Casio STAT 2 Instrukcja Użytkownika Strona 8

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Oprogramowanie Casio STAT 2