A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the following observations on the area of scleral lamina (mm2) from human optic nerve heads: 2.79 2.66 2.80 3.92 2.28 2.81 4.02 4.16 3.95 4.26 3.51 4.61 2.37 3.66 2.72 3.64 2.96 (a) Calculate Σx i and Σx i 2. (Round Σx i 2 to two decimal places.) Σx i = mm2 Σx i 2 = mm4 (b) Use the values calculated in part (a) to compute the sample variances 2 and then the sample standard deviations. (Round your answers to three decimal places.) s 2 = mm4 s = mm2

A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the following observations on the area of scleral lamina (mm 2 ) from human optic...

A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the following observations on the area of scleral lamina (mm²) from human optic nerve heads:

2.79	2.66	2.80	3.92	2.28	2.81	4.02	4.16	3.95
4.26	3.51	4.61	2.37	3.66	2.72	3.64	2.96

(a) Calculate Σx
_i and Σx
_i
². (Round Σx
_i
² to two decimal places.)

Σx _i	= mm²
Σx _i ²	= mm⁴

(b) Use the values calculated in part (a) to compute the sample variances
² and then the sample standard deviations. (Round your answers to three decimal places.)

s ²	= mm⁴
s	= mm²

Jun 09, 2022

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A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the following observations on the area of scleral lamina (mm 2 ) from human optic...

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