I don't understand how to create jennings chart or where to start

$1)$ Create a Levey$-$Jennings chart for the Level I control reported for Laboratory A in Self Test $12$ using a mean of $90\frac{U}{L}$ and a standard deviation of $9\frac{U}{L}.$ Assuma that each data point was obtained on separate days. Are there any points outside the $+-2$ s limits$?$

$2)$Create a Levey$-$Jennings chart for the Level II control reported for Laboratory A in Sell Test H$2$ using a mean of $350\frac{U}{L}$ and a standard deviation of $25\frac{U}{L}.$ Assume that each data point was obtained on separate days. Are there ary points outside the $+-2$ s limits$?$

Calculate the normal and$/$or abnormal control mean for each of the following sets of control data.

Laboratory A

Level I $($Normal Control$)$

Level II $($Abnormal Control$)$

Unassayed Chemistry Control. Lol No$.12345$

Unassayed Chemistry Control. Lol No$.12345$

Test: Creatine Kinase

Test: Creatine Kinase

instrument: ABC

Instrument: ABC

Units: UR

Units: UR

Control Values are:

Control Values are:

$\{94,93,97,95,95,100,100,99,100,99\}$

$,$

$298,327,334\}$