Statistics
xˉ=6.4\(\bar{x}\) = 6.4 books
x~=5.1\(\tilde{x}\) = 5.1 books
xˉ=5.1\(\bar{x}\) = 5.1 books
x~=4.5\(\tilde{x}\) = 4.5 books
x~=4.0\(\tilde{x}\) = 4.0 books
xˉ=3.8\(\bar{x}\) = 3.8 books
x~=5.9\(\tilde{x}\) = 5.9 books