Wayne Gretzky scored 50% more points than anyone else who ever played professional Hockey during his 20 seasons in the National Hockey League. He accomplished this amazing feat while playing in 280 fewer games than Gordy Howe, who is the previous record holder. The number of games he played during each season:
79,80,80,80,74 ,80,80,79,64,78,73,78,74,45,81,48,80,82,82,70.
a) The stem and leaf plot for the data can be comfortably obtained from the excel option as follows: XL STAT option in excel as follows:
1. In excel sheet choose XL STAT
2. Then in that choose the visualizing data- uni-variate plots.
3. In univariate plot – chart -select the stem and leaf plot.
4. In quantitative data select the data set and click ok.
A summary of the statistics and a stem and leaf plot can be obtained as follows.
Answer:
1 D (10, 120)
2 C (20, 40)
Step-by-step explanation:
Answer:
Step-by-step explanation:
First we define two generic vectors in our 
space:
By definition we know that Euclidean norm on an 2-dimensional Euclidean space is:
Also we know that the inner product in space is defined as:
So as first condition we have that both two vectors have Euclidian Norm 1, that is:
and
As second condition we have that:
Which is the same:
Replacing the second condition on the first condition we have:
Since 
we have two posible solutions, 
or 
. If we choose , we can choose next the other solution for 
.
Remembering,
The two vectors we are looking for are:
