Representing data
Would a histogram or a dot plot represent this data better?
The number of siblings in the Archery club has
0,1,3,2,1,3,6,3,2,1,2,1,1,0,0,2,5
Dot plot
Identify any outliers in the data set
Mr. Miller's period 4 test scores
90, 83, 96, 72, 64, 44, 100, 99, 88, 94, 78, 83, 95, 88, 34, 96, 85, 97, 87, 74, 68, 77, 85, 97
34 and 44
Should you use mean or median to find the center of each of these data sets?
Hours of sleep over 10 days: 7, 6.5, 8, 7.5, 13, 7.2, 7.1, 6.9, 3, 7.5
Basketball shorts made in 10 random games throughout the season: 10, 11, 9, 10, 12, 11, 10, 9, 11, 10
Hours of sleep: use median
Basketball shots made: use mean
If a stove has a pot of water over it and is turned to 200 degrees farenhight, is the water starting to boil an example of correlation or causation?
This is an example of causation.
Mr Phill notices that his students who spend more time studying score higher on the monthly test. He created a line of best fit.
Y=5x+20 y=mx+b
Considering that y equals the student's test score % and x is the hours spent studying each week, what does the Y intercept/b/20 mean in this line of best fit?
In this line of best fit, the y intercept/b/20 means that if a student studies for zero hours each week, they will score 20% on the monthly test.
Is this dot plot accurate for this data set
Numbers rolled on a dice during a game of Yahtzee
x x
x x x
x x x x x x
_x______x_______x________x________x_______x_
1 2 3 4 5 6
No, this dot plot is not accurate. For it to be accurate, there would have to be 2 more x's in the 2 category, as in the data, there are 6 2's
Identify outliers in the stem and leaf plot
Number of books the 7th grade read throughout the year at Johnson Middle School.
1 l 3,5,6,8,8,9
2 l 2,2,3,5,7,8,8,9
3 l 1,1,6,7,7,7,9
4 l
5 l
6 l 6
7 l 2
The only outliers in this stem and leaf plot are 66 and 72
Which person has the highest average step count over the course of a week?
person 1: 6,550, 4,300, 5,400, 8,460, 10,510, 7,250, 3,540
person 2: 5,800, 7,200, 10,900, 3,400, 6,080, 9,300, 6,100
Person 2
If these data points were placed on a dot plot, would there be a correlation?
(2,3) (1,10) (2,9) ( 3,4) (3,5) (4,8) (5,11) (6,4) (6,7) (6,10) (6,12) (7,10) (10,4) (10,7) (12,8) (12,13)
y=shoe size
x= number of siblings
There would be no correlation.
What is the line of best fit for these data points
(1,2) (2,6) (3,7) (4,8) (5,12)
Y=2x+1