The table gives the coal consumption of a country for selected years. Use the table to answer parts (a) through (f). Year 1950 1960 1970 1980 1990 2000 2010 2012 523.1 701.7 904.9 1082.4 1046.7 885.3 Millions of Short Tons 494.5 399.6 (a) Draw a scatterplot, letting t=0 represent 1950. Choose the correct graph below. 1200- 70 OB. AY 1200- 80 O C. 1200 (b) Use the quadratic regression feature of a graphing calculator to get a quadratic function that approximates the data. y=²²+0¹+0 (Round to three decimal places as needed.) 70 G
The table gives the coal consumption of a country for selected years. Use the table to answer parts (a) through (f). Year 1950 1960 1970 1980 1990 2000 2010 2012 523.1 701.7 904.9 1082.4 1046.7 885.3 Millions of Short Tons 494.5 399.6 (a) Draw a scatterplot, letting t=0 represent 1950. Choose the correct graph below. 1200- 70 OB. AY 1200- 80 O C. 1200 (b) Use the quadratic regression feature of a graphing calculator to get a quadratic function that approximates the data. y=²²+0¹+0 (Round to three decimal places as needed.) 70 G
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:The table gives the coal consumption of a country for selected years. Use the table to answer parts (a) through (f).
Year
1960 1970 1980 1990 2000 2010
2012
1950
494.5 399.6
523.1 701.7 904.9 1082.4 1046.7
885.3
Millions of
Short Tons
(a) Draw a scatterplot, letting t=0 represent 1950. Choose the correct graph below.
A.
1200-
70
Q
B.
AY
1200-
80
Q
O C.
Ay
1200-
(b) Use the quadratic regression feature of a graphing calculator to get a quadratic function that approximates the data.
y=¹²+₁+0
(Round to three decimal places as needed.)
70
Q
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