Answer
mean: 6.0
median: 6.05
mode: 4.9 and 6.8
Work Step by Step
Mean:
$(4.9+7.1+6.8+6.8+5.3+4.9)\div6=35.8\div6=5.9\overline6\approx6.0$
Median
$4.9, 4.9, 5.3,\underset\uparrow\ 6.8, 6.8, 7.1$
$(5.3+6.8)\div2=12.1\div2=6.05$
Mode
$\underline{4.9}, \underline{4.9}, 5.3, \underline{6.8}, \underline{6.8}, 7.1$