The New York City Data Initiative reports on annual water consumption. The accompanying table shows daily water consumption per capita? (in gallons) from 1986 to? 2019, along with a scatterplot. A regression to predict Daily water consumption per capita from Year has an

R2

of

92.8%.

Complete parts a through c.

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Click the icon to view the water consumption data and scatterplot.

Year Daily Water Consumption (million gallons per capita)
1986 185
1987 197
1988 202
1989 191
1990 194
1991 199
1992 184
1993 182
1994 179
1995 174
1996 169
1997 155
1998 155
1999 156
2000 155
2001 148
2002 141
2003 136
2004 136
2005 141
2006 132
2007 137
2008 135
2009 123
2010 127
2011 123
2012 121
2013 120
2014 118
2015 119
2016 118
2017 117
2018 120
2019 118

Question content area bottom

Part 1

?a) What are the variables and units in this? regression?

Water consumption in millions of gallons per person

Population in capita

Water consumption in gallons

R2

in percentage

Part 2

?b) What are the units of the? slope?

Million gallons? (per person)

Years per million gallons? (per person)

Million gallons? (per person) per year

Years

Part 3

?c) What is the correlation between water consumption and? year?

The correlation is

enter your response here.

?(Round to three decimal places as? needed.)