Sometimes we need to determine if data is actually “normal”.
Determine if the data set includes...
Sometimes we need to determine if data is actually “normal”.
Determine if the data set includes more than 1 outlier.
85,53,70,10,11,40,10,65,55,25
1. What is my 5 number summary?
2. What is my interquartile range?
3. What is an outlier in my data set?
4. Do I have any outliers in the lower part of my data set?
Data Set A- 7,7,7,9,9,9,10
Data Set B- 4,6,6,6,8,9,9,9,10,10,10
Step 1
Create a bar graph that examines...
Data Set A- 7,7,7,9,9,9,10
Data Set B- 4,6,6,6,8,9,9,9,10,10,10
Step 1
Create a bar graph that examines a variable or variables in
your data set.
Step 2
Find the sample mean, median (if it exists) mode for each set
of data
Next find the sample standard deviations for each set of
data
Create a box and whisker plot for each variable for each set
data
Eliminate any outliers from the samples. Redo part 1 for each
variable (if necessary, if not...
Generate data of 600 random variable from normal distribution
with mean 8 and standard deviation 3...
Generate data of 600 random variable from normal distribution
with mean 8 and standard deviation 3 give it a name “MyData”
Calculate the following from MyData,
Mean, Variance, Standard deviation, minimum, Q1, Median, Q3,
Maximum.
Construct a histogram from MyData with title: Histogram of
MyData generated from Normal dist with mean= 8 and sd=3.
Construct a box plot from the generated data.
1. If a set of data follows a normal curve distribution, with a
mean of 180...
1. If a set of data follows a normal curve distribution, with a
mean of 180 and a standard deviation of 20, then approximately 95%
% of the data lies in a region centered round the mean between
values of (3 points)
160 and 200
140 and 220
120 and 240
100 and 260
80 and 280
2. Calculate by hand the range, variance and standard deviation
for this data. Round your answers to two decimal points. (12
points)
20,...
Consider the following set of sample data, and find the
following (note: if you are using...
Consider the following set of sample data, and find the
following (note: if you are using TI 83 to find these values, you
need to write down the formulas that you should have used)
19
12
9
19
0
4
3
14
5
5
24
2
5
7
17
(a). Mean
(b). Median
(c). Mode
(d). Standard Deviation
(e). Variance
(f). Find the z-score for 14.
(i). Construct a Box-whisker plot for the data
(j). Construct a frequency distribution Table....
np, nq formula
A) Explain when you can use normal distribution to approximate
the binomial distribution...
np, nq formula
A) Explain when you can use normal distribution to approximate
the binomial distribution
B) If we already know the binomial probability distribution
formula, why do we need to know this one?
C)When is it useful to approximate the binomial distribution as
normal. Provide 1 example