The ratio of the number of atoms of the isotopes 69Ga and 71Ga in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium:

Find the
(a) mean,
(b) standard deviation, and
(c) variance.
(d) Write the mean and standard deviation together with an appropriate number of significant digits.

Transcribed Image Text:

Sample 6 Ga1Ga Sample 6Ga Ga 1.526 60 1.529 74 1.525 92 1.527 βι 1.528 94 1.528 04 1.526 85 1.527 93 3