The data are the colors of backpacks. Again, you sample the same five students. One student has a red backpack, two students have black backpacks, one student has a green backpack, and one student has a gray backpack. The colors red, black, black, green, and gray are qualitative data.
The data are the colors of houses. You sample five houses. The colors of the houses are white, yellow, white, red, and white. What type of data is this?
You may collect data as numbers and report it categorically. For example, the quiz scores for each student are recorded throughout the term. At the end of the term, the quiz scores are reported as A, B, C, D, or F.
Work collaboratively to determine the correct data type (quantitative or qualitative). Indicate whether quantitative data are continuous or discrete. Hint: Data that are discrete often start with the words "the number of."
the number of pairs of shoes you own
the type of car you drive
where you go on vacation
the distance it is from your home to the nearest grocery store
the number of classes you take per school year.
the tuition for your classes
the type of calculator you use
movie ratings
political party preferences
weights of sumo wrestlers
amount of money (in dollars) won playing poker
number of correct answers on a quiz
peoples’ attitudes toward the government
IQ scores (This may cause some discussion.)
Items a, e, f, k, and l are quantitative discrete; items d, j, and n are quantitative continuous; items b, c, g, h, i, and m are qualitative.
Determine the correct data type (quantitative or qualitative) for the number of cars in a parking lot. Indicate whether quantitative data are continuous or discrete.
A statistics professor collects information about the classification of her students as freshmen, sophomores, juniors, or seniors. The data she collects are summarized in the pie chart
[link] . What type of data does this graph show?
This pie chart shows the students in each year, which is
qualitative data .
The registrar at State University keeps records of the number of credit hours students complete each semester. The data he collects are summarized in the histogram. The class boundaries are 10 to less than 13, 13 to less than 16, 16 to less than 19, 19 to less than 22, and 22 to less than 25.
What type of data does this graph show?
Try it solutions
A histogram is used to display quantitative data: the numbers of credit hours completed. Because students can complete only a whole number of hours (no fractions of hours allowed), this data is quantitative discrete.
Below are tables comparing the number of part-time and full-time students at De Anza College and Foothill College enrolled for the spring 2010 quarter. The tables display counts (frequencies) and percentages or proportions (relative frequencies). The percent columns make comparing the same categories in the colleges easier. Displaying percentages along with the numbers is often helpful, but it is particularly important when comparing sets of data that do not have the same totals, such as the total enrollments for both colleges in this example. Notice how much larger the percentage for part-time students at Foothill College is compared to De Anza College.
sampling is technique to draw the sample from population
Vikram
On February 14, 1985, that “fewer Americans have health insurance coverage than previously thought”. The survey was based on a sample of 20000 households, concluded that about 85% of the population is covered by health insurance− a far cry from t
On February 14, 1985, the Bureau of the Census released a survey indicating that “fewer Americans have health insurance coverage than previously thought”. The survey was based on a sample of 20000 households, concluded that about 85% of the population is covered by health insurance− a far cry from t
sample mean 25, sample standard deviation 20, sample size 200, calculate the confidence interval using the given values and the original confidence level of 90%.
please can anyone help me solve these questions below? I need help please.
MMSI
a)An investor wants to eliminate seven of the investments in her portfolio by selling 4 stocks and 3 bonds.
In how many can these be sold if among 25 securities in the portfolio,13 are stocks and the rest bonds?
MMSI
a)If a random variable has the standard normal distribution,what are the probabilities that it will take on a
value:
i)Less than 1.64
ii)Greater than-0.47
MMSI
b)A random variable has a normal distribution with a mean of 60 and standard deviation 5.2.What are the
probabilities that the random variable will take on a value:
i)Less than 65.2
ii)Between 48 and 72?
MMSI
b)If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001,use
the Poisson law to calculate the probability that out of 2000 individuals
i)Exactly 3 individuals will suffer a bad reaction.
ii)More than 2 individuals will suffer a bad reaction.
MMSI
b)The breakfast menu serve data popular 5-star Hotel in Accra consists of the following items:
Juice-Mango,Grape,Apple.
Toast-Whitewheat,Whole wheat.
Egg:Fried,Hard-boiled,Scrambled.
Beverage:Coffee,Tea,Cocoa.
MMSI
Continuation of the last question.Assist the Hotel manager to determine the number of possible breakfast combinations that can be served,
one from each category
what is the difference between population and sample
Inam
Sample is the group of individual who participate in your study.
Sample is a subset of population.
Population is the broader group of people to whom you intend to generalize the results of your study.
Ekene
how do you find z if you only know the area of .0808
calculate chi-square if observed x,y,z frequency 40,30,20total 90
Insha
find t value,if boysN1, ،32,M1,87.43 S1square,39.40.GirlsN2,34,M2,82.58S2square,40.80
Determine whether the results are significant or insignificant
Insha
The heights of a random sample of 100 entering HRM Freshman of a certain college is 157 cm with a standard deviation of 8cm. test the data against the claim that the overall height of all entering HRM students is 160 cm. previous studies showed that
STATISTICS IN PRACTICE:
This is a group assignment that seeks to reveal students understanding of statistics in general and it’s practical usefulness. The following are the guidelines;
1. Each group has to identify a natural process or activity and gather data about/from the process.
2.
The diameter of an electric cable,say, X is assumed to be continoues random variable with p.d.f f(x)=6x(1-x); ≤x≤1 a)check that f(X) is p.d.f b) determine a number b such that p(Xb)
regression line can have variables ?
i- only two or
tow or more
Muzammil
Hi Muzammil, regression line can have two or more variables depending upon the type of regression we would be doing.
ANKAN
Simple linear regression generally account for two variables, one dependent and one independent. Multiple linear regression can have more than two variables.