Statistics.d — Disynergy

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Price relatives computed for chain base method are called
In the fix base method, the base period should be
The most suitable average for index numbers is
The index for the base period is always taken as
Find the mode of the call received on 7 consecutive days 11,13,13,17,19,23,25
When the Mean of a number is 18, what is the Mean of the sampling distribution?
Find the arithmetic mean of the set of data: 6,1,5,8, and 10
Poisson distribution is applied for
Find the range of the following data sets 61,22,34,17,81,99,42,94.
The relationship between two variables partialling out the effect that a third variable has on one of those variables can be expressed using a:
A café owner decided to calculate how much revenue he gained from lattes each month. What type of variable would the amount of revenue gained from lattes be?
If a test is valid, what does this mean?
When questionnaire scores predict or correspond with external measures of the same construct that the questionnaire measures it is said to have:
A café owner wanted to compare how much revenue he gained from lattes across different months of the year. What type of variable is ‘month’?
Which of the following is appropriate to graph a single categorical variable?
Which of the following is not a recommended type of graph and cannot compare the complex data?
Density plots, histograms, and boxplots can all be used to
Custom functions are useful when doing which of the following?
Which of the following measures would be most appropriate for describing the spread of a variable that is extremely right-skewed?
Which of the following measures would be most appropriate for describing the central tendency of a variable that is continuous and normally distributed?
When the values in a series do not have equal importance, we calculate the _______.
Which measure of central tendency includes the magnitude of scores?
Which of the following is not a disadvantage of using mean?
_________ is not a measure of central tendency.
Percentiles divide a series into ______
Which of the following diagrams is used to find the value of mode graphically?
The _____ for a set of scores can be obtained by using the formula X75 – X25
You have collected a set of scores from participants performing a reaction time task. You decide that the most appropriate measure of central tendency for the scores is the median. The most appropriate measures of variability would thus be the
Process that expands the range of intensity levels in image is called
The shape of symmetrical distribution is _______
The binomial distribution depends on which of the following?
In a normal distribution, 95% of observations are
A sampling distribution shows
What is the probability that a ball is drawn at random from a jar?
The multiplication law is potentially helpful when we are interested in computing the probability of
In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were posted by them?
Which one of these variables is a binomial random variable?
Which of the following is NOT an assumption of the Binomial distribution? __________»
What does the r stand for in the binomial probability formula?
What does Poisson Distribution describe?
A course is being rated by students on a scale of 1 star to 5 stars. What is the level of measurement being used in this case?
Interval and Ratio types of data by nature are:
One column in a data table is the gender of the employee (e.g. Male, Female, Undefined). What level of measurement is used here?
A slippery-slope pattern of argument is fallacious when… One column in a data table is the daily temperature in degrees Celsius.
Participant observation is ______________ .
Which of the following aspects is an advantage of closed questions?
The quality of data depends on the wording of questions. Which of the following should be used when formulating effective questions?
How much money do you spend on cigarettes each week?’ This is an example of a __________ question.
Which of the following sampling methods, which is a probability method?
Which of the following is not a type of non-probability sampling?
According to what theory does the proposition “X causes Y” mean that an intervention to change the value or probability distribution of X will change the value or probability distribution of Y?
Sample is regarded as a subset of?
The difference between the expected value of a statistic and the value of the parameter being estimated is called a:
A 95% confidence interval for the mean of a population is such that
Estimates given in the form of confidence intervals are called
A confidence interval will be widened if
By decreasing the sample size, the confidence interval becomes
(1 — a) is called
The distance between an estimate and the estimated parameter is called
The shape of the t-distribution depends upon the
Which of the following is true for the coefficient of correlation?
If the values of two variables move in the same direction, ___________
What is the meaning of the testing of the hypothesis?
Which of the following statements is true about the type two error?
Which of the following statements is true about the correlational analysis between two sets of data?
The original hypothesis is known as ______.
Which of the following techniques is an analysis of the relationship between two variables to help provide the prediction mechanism?
Which of the following statements is true about the null hypothesis?
The independent variable is used to explain the dependent variable in ________.
In regression analysis, the variable that is being predicted is
Least square method calculates the best-fitting line for the observed data by minimizing the sum of the squares of the _______ deviations.
The standard deviation is to the mean as the ____________ is to the regression line
A residual is defined as
A measure of goodness of fit for the estimated regression equation is the
If a regression coefficient is less than 1 then the other should be?
Negative autocorrelation can be indicated by which of the following?
When measurement errors are present in the explanatory variable(s) they make
For the presence and absence of first-order autocorrelation valid tests are
Choose a true statement about Durbin-Watson test