$2\mathrm{.}7$ Based on your standard

deviation calculations, were teams

more similar in terms of wins in

$1990$ or in $2019?$

a$.$ Recall that standard deviation

is a measure of how similar

items in a list are $($large

standard deviations imply less

similarity$).$

b$.$ Select either $1990$ or $2019$

from the drop$-$down list in cell

$(116).$