Anaylyzing one variable data.
The test scores of 10 students are;45,60,75,80,55,70,85,90,65 and lastly 50. what is the mean score?
67.5- mean equals sum of data divided by the number of data points so that turns into 675 divided by 10!!!
A random set of ages list by, 12,14,13,11,15,16,14,12. Make a stemplot.
stem leaf
1 1,2,3,3,4,4,5,6
The ages of a group of 7 friends are 12,14,15,16,14,15
What is the mode???
The most frequent ages are 14 and 15 so actually iy Bimodial!!!
Use this graph for questions that are worth 200 and 300 in this category!!
The test scores of some students came out to, 72,85,90,78,65,88,92,74,81,69. make a stemplot.
stem leaf
6 5,9
7 2,4,8
8 1,5,8
9 0,2
The daily hihh temputure for 6 days are 68,70,72,75,74,71.
What is the mean temputure??
Mean= 68+70+72+75+74+71 over 6 which equals 430 divided by 6 which equals that 71.67 is the mean.
Using the stemplot ( as i said above) what is the median score??
ordered data is 65,69,72,74,78,81,85,88,90,92.
so the median is (78+81)+2 = 79.5
the number of goals scored in 5 soccer matches are...- 2,0,3,1,4. what is the range of these goals?
range=max - min so that equals to, 4-0=4
Use this stemplot in this category that are worth 100 and 400.
from the ages in the stemplot what is the mode?
The value 12 and 14 both appear twice so the data is binomial 12 and 14.
the weights of 9 puppies are... 2,3,4,2,5,3,6,4,2.
What is the IQR?
Q1= median of lower halve= median of (2,2,2,3)=(2+2)+2=2
Q3= median of upper halve = median of (4,4,5,6) = (4,4,5,6)=(4+5)+2=4.5
IQR=Q3-Q1=4.5-2+2.5
the time it took in minutes was recorded to see how long it would take to finish their quiz make a stem plot.
22,27,31,34,29,33,35,21,28
stem leaf
2 1,2,6,7,8,9
3 1,3,4,5