You are faced with a counting problem in which you must choose k objects from n total objects. The order of choosing does not matter. The counting method you should use is:
Answer(s): B
The combination, or binomial formula, gives the number of ways that k objects can be chosen from n items, without regard to the order of choosing. The formula is n_C_k = (n choose k) = n! / [k! *(n-k)!].
In a statistical regression estimation, the R-square is found to be 39% and the slope coefficient is -0.3. The percentage of variance of the dependent variable not explained equals ________.
The R-square of the regression measures the amount of variance of the dependent variable explained by the independent variable. This is given to be 39%. Hence, the amount not explained equals 100% - 39% = 61%.
A bell-shaped, symmetrical frequency distribution has a mean of 10. If 16% of the observations in the distribution are negative, what is the coefficient of variation of X?
Answer(s): A
The fraction of observations which are less than zero equals 16% i.e. the fraction of observations which are less than (mean - 10) equals 16% (given). Since the distribution is symmetrical about the mean, this implies that the fraction of observations which are more than (mean + 10) also equals 16%. Thus, the fraction of the observations lying between 0 and 20 equals 1-0.16-0.16 = 0.68. For a bellshaped, symmetrical frequency distribution, 68% of the observations lie within one standard deviation of the mean. Hence, the standard deviation of the distribution equals 10. The coefficient of variation is then equal to standard deviation/mean = 10/10 = 1.
A population consists of all the weights of all defensive tackles on Sociable University's football team. They are:Johnson, 204 pounds; Patrick, 215 pounds; Junior, 207 pounds; Kendron, 212 pounds; Nicko, 214 pounds; and Cochran, 208 pounds. What is the population standard deviation (in pounds)?
Population variance = (Sum of squared deviation from the mean)/N. The mean is 210. Population variance = (36 + 25 + 9 + 4 + 16 + 4)/6 = 94/6 = 15.67. Population standard deviation is the square root of the population variance = 3.958.xx-mean(x-mean)^2204-636215525207-3921224214416208-24
Which measure of dispersion disregards the algebraic signs (plus and minus) of each difference between Xand the mean?
Answer(s): C
The mean deviation is the mean of the absolute values of the deviations from the mean.
Share your comments for Financial CFA Level 1 exam with other users:
how i can see exam questions?
can you please upload please?
question 75: option c is correct answer
please add this exam
please upoad
has anyone recently attended safe 6.0 certification? is it the samq question from here.
expository experience
52 should be b&c. controller failure has nothing to do with this type of issue. degraded state tells us its a raid issue, and if the os is missing then the bootable device isnt found. the only other consideration could be data loss but thats somewhat broad whereas b&c show understanding of the specific issues the question is asking about.
great help!!!
very useful tools
looks a good platform to prepare az-104
want to pass the exam
good resource
question 11 : d
only the free dumps will be enough for pass, or have to purchase the premium one. please suggest.
good questions. thanks.
good for practice.
great case study
the questions in this exam dumps is valid. i passed my test last monday. i only whish they had their pricing in inr instead of usd. but it is still worth it.
q40 the answer is not d, why are you giving incorrect answers? snapshot consolidation is used to merge the snapshot delta disk files to the vm base disk
thanks, very relevant
wrong answer. it is true not false.
please i need the mo-100 questions
very good use full
very valid questions
will these question help me to clear pl-300 exam?
please provide me with these dumps questions. thanks
in the pdf downloaded is write google cloud database engineer i think that it isnt the correct exam
i think you have the answers wrong regarding question: "what are three core principles of web content accessibility guidelines (wcag)? answer: robust, operable, understandable
these questions are not valid , they dont come for the exam now
question looks valid
good for practice
need more q&a to go ahead
question 59 - a newly-created role is not assigned to any user, nor granted to any other role. answer is b https://docs.snowflake.com/en/user-guide/security-access-control-overview