In computing the mean hours watched, were there any apparent outliers? What effect might this have on the mean hours watched?
Descriptions of variable variable
TV hours Total number of TV hours watched per day How obedient the child is
obedience $1=$ very obedient, $5=$ not obedient
Attitude while playing with other children
Attitude $1=$ non-aggresive, $5=$ very aggresive
$2,3,1,4,2,3,5,1,2,3$
3. Recompute the mean without the outlier (s)

Step 1 ：The given data is [2, 3, 1, 4, 2, 3, 5, 1, 2, 3].

Step 2 ：An outlier is an observation that lies an abnormal distance from other values in a random sample from a population.

Step 3 ：The z-scores of the data points in the given data set were calculated and compared with a threshold value of 2 to identify any outliers.

Step 4 ：No outliers were found as all the z-scores were less than the threshold.

Step 5 ：Therefore, the mean was calculated with all the data points.

Step 6 ：The mean hours watched per day is \(\boxed{2.6}\).

Step 7 ：Final Answer: There were no apparent outliers in the data. The mean hours watched per day is \(\boxed{2.6}\).