For mallard ducks and Canada geese, what percentage of nests are successful (at least one offspring survives)? Studies in five states gave the following percentages of successful nests.
x: Percentage success for mallard duck nests
53 83 46 7 31
y: Percentage success for Canada goose nests
28 61 50 76 9
(a) Use a calculator to compute Σx, Σx2, Σy, and Σy2.
Σx =
Σx2 =
Σy =
Σy2 =
(b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x, the percent of successful mallard nests. (Round your answers to two decimal places.)
x =
s2 =
s =
(c) Use the results of part (a) to compute the sample mean, variance, and standard deviation for y, the percent of successful Canada goose nests. (Round your answers to two decimal places.)
y =
s2 =
s =
(d) Use the results of parts (b) and (c) to compute the coefficient of variation for successful mallard nests and Canada goose nests. (Round your answers to one decimal place.)
mallard ducks CV = %
Canada geese CV = %
.....HELP. SO LOST
x: Percentage success for mallard duck nests
53 83 46 7 31
y: Percentage success for Canada goose nests
28 61 50 76 9
(a) Use a calculator to compute Σx, Σx2, Σy, and Σy2.
Σx =
Σx2 =
Σy =
Σy2 =
(b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x, the percent of successful mallard nests. (Round your answers to two decimal places.)
x =
s2 =
s =
(c) Use the results of part (a) to compute the sample mean, variance, and standard deviation for y, the percent of successful Canada goose nests. (Round your answers to two decimal places.)
y =
s2 =
s =
(d) Use the results of parts (b) and (c) to compute the coefficient of variation for successful mallard nests and Canada goose nests. (Round your answers to one decimal place.)
mallard ducks CV = %
Canada geese CV = %
.....HELP. SO LOST
-
michelle
First, input both sets of values into LISTS using a stat calculator (TI-83 or 84). Then, use the 1-variable stat screen to look up the answers ...
(a) Use a calculator to compute Σx, Σx2, Σy, and Σy2.
Σx = 220
Σx2 = 12824
Σy = 224
Σy2 = 12862
(b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x, the percent of successful mallard nests. (Round your answers to two decimal places.)
x = 44.00
s2 = 786.00
s = 28.04
(c) Use the results of part (a) to compute the sample mean, variance, and standard deviation for y, the percent of successful Canada goose nests. (Round your answers to two decimal places.)
y = 44.80
s2 = 706.70
s = 26.58
(d) Use the results of parts (b) and (c) to compute the coefficient of variation for successful mallard nests and Canada goose nests. (Round your answers to one decimal place.)
mallard ducks CV = 28.04 / 44.00 x 100 = 63.7%
Canada geese CV = 26.58 / 44.80 = 59.3 %
hope that helped
First, input both sets of values into LISTS using a stat calculator (TI-83 or 84). Then, use the 1-variable stat screen to look up the answers ...
(a) Use a calculator to compute Σx, Σx2, Σy, and Σy2.
Σx = 220
Σx2 = 12824
Σy = 224
Σy2 = 12862
(b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x, the percent of successful mallard nests. (Round your answers to two decimal places.)
x = 44.00
s2 = 786.00
s = 28.04
(c) Use the results of part (a) to compute the sample mean, variance, and standard deviation for y, the percent of successful Canada goose nests. (Round your answers to two decimal places.)
y = 44.80
s2 = 706.70
s = 26.58
(d) Use the results of parts (b) and (c) to compute the coefficient of variation for successful mallard nests and Canada goose nests. (Round your answers to one decimal place.)
mallard ducks CV = 28.04 / 44.00 x 100 = 63.7%
Canada geese CV = 26.58 / 44.80 = 59.3 %
hope that helped