Helped need with Project 2

project_2_spreadsheet-1.xls

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Question 1

Question 1 Part a
	Data
	x
	1	0.5
	2	0.5
	3	0.5	SD	1.58
	4	0.5	Mean	3.00
	5	0.5	Median	3.00
		0.5
		0.5
		0.5
		1
Question 1 Part b
	Data				Data
	x				x
	2	0.5			5	0.5
	2	0.5			10	0.5
	2	0.5	SD	1.07	15	0.5	SD	12.25
	2	0.5	Mean	3.00	20	0.5	Mean	22.50
	4	0.5	Median	3.00	25	0.5	Median	22.50
	4	0.5			30	0.5
	4	0.5			35	0.5
	4	0.5			40	0.5
		1				1
				As you enter your numbers into one of the data columns, the chart next to it will automatically adjust the x-axis scale to match the values that have been entered.
				The SD, mean and median will be automatically calculated. Do not enter value in the yellow boxes.
				SD = Standard Deviation

Question 1

Question 2

Question 3

Question 4

Question 2
Data
x	y
1	1	SD	1.58
2	1	Mean	3.00
3	1	Median	3.00
4	1
5	1
	1
	1
	1
As you enter your numbers into one of the data columns, the chart next to it will automatically adjust the x-axis scale to match the values that have been entered.
The SD, mean and median will be automatically calculated. Do not enter value in the yellow boxes.
SD = Standard Deviation

a) Create a set of 5 points that are very close together and record the standard deviation. Next, add a 6th point that is far away from the original 5 and record the new standard deviation. What is the impact of the new point on the standard deviation? Do not just give a numerical value for the change. Explain what happened to the standard deviation in words. (4 points) Answer:

b) Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1. Use the 2nd chart to create a second data set with 8 points that has a mean of approximately 10 and a standard deviation of approximately 4. What did you do differently to create the data set with the larger standard deviation? (4 points) Answer:

Question 4

Question 5

Question 3
Enter set 1 data below
x	y
1	1	SD	2.45
2	1	Mean	4.50
3	1	Median	4.50
4	1
5	1
6	1
7	1
8	1
Enter set 2 data below
x	y
1	1	SD	2.4494897428
2	1	Mean	4.5
3	1	Median	4.5
4	1
5	1
6	1
7	1
8	1
Enter set 3 data below
x	y
1	1	SD	2.4494897428
2	1	Mean	4.5
3	1	Median	4.5
4	1
5	1
6	1
7	1
8	1
		As you enter your numbers into one of the data columns, the chart next to it will automatically adjust the x-axis scale to match the values that have been entered.
		The SD, mean and median will be automatically calculated. Do not enter value in the yellow boxes.
		SD = Standard Deviation

Enter the following data in the data column. (8 points) 50, 50, 50, 50, 50. Notice that the standard deviation is 0. Explain why the standard deviation for this one is zero. Do not show the calculation. Explain in words why the standard deviation is zero when all of the points are the same. If you don’t know why, try doing the calculation by hand to see what is happening. If that does not make it clear, try doing a little research on standard deviation and see what it is measuring and then look again at the data set for this question. Answer:

Question 5

Data Set for Project 1
Maximum Temperatures by State
in the United States
for the month of August, 2013
State Name	Max Temps in August 2013
AL	97
AK	97
AZ	111
AR	100
CA	111
CO	109
CT	93
DE	91
FL	37
GA	99
HI	90
ID	97
IL	97
IN	93
IA	100
KS	111
KY	93
LA	97
ME	93
MD	97
MA	97
MI	91
MN	109
MS	97
MO	97
MT	90
NE	108
NV	111
NH	93
NJ	108
NM	106
NY	93
NC	100
ND	88
OH	91
OK	108
OR	97
PA	93
RI	104
SC	97
SD	93
TN	99
TX	49
UT	106
VT	91
VA	102
WA	93
WV	91
WI	90
WY	99

Enter the following data sets in the data columns above: Data set 1: 0, 25, 50, 75, 100 Data set 2: 30, 40, 50, 60, 70 Data set 3: 40, 45, 50, 55, 60 Note that all three data sets have a median of 50. Notice how spread out the points are in each data set and compare this to the standard deviations for the data sets. Describe the relationship you see between the amount of spread and the size of the standard deviation and explain why this connection exists. Do not give your calculations in your answer — explain in words. (8 points) Answer:

Explain what an outlier is. Then, if there are any outliers in the Project 1 Data Set, what are they? If there are no outliers, say no outliers. (4 points) Answer:

Data Set for Project 1
Maximum Temperatures by State
in the United States
for the month of August, 2013
State Name	Max Temps in August 2013
AL	97
AK	97
AZ	111
AR	100
CA	111
CO	109
CT	93
DE	91
FL	37
GA	99
HI	90
ID	97
IL	97
IN	93
IA	100
KS	111
KY	93
LA	97
ME	93
MD	97
MA	97
MI	91
MN	109
MS	97
MO	97
MT	90
NE	108
NV	111
NH	93
NJ	108
NM	106
NY	93
NC	100
ND	88
OH	91
OK	108
OR	97
PA	93
RI	104
SC	97
SD	93
TN	99
TX	49
UT	106
VT	91
VA	102
WA	93
WV	91
WI	90
WY	99

Which 4 temperatures in the data set look to be the most questionable or the most unrealistic to you? Explain why you selected these 4 points. (4 points) Answer: