Multiple Choice Questions (MCQs)
The data which has not undergone any statistical treatment is called:
If a significance level of 1% is used rather than 5%, the null hypothesis is:
Which of the following is not a characteristic of the arithmetic mean?
For positively skewed distribution Mean ________ Median ________ Mode
Which of the following statements is NOT true?
In a set of 10 values all the values are 5, what will be the P50?
An automobile is running, during the first 60 Km, at the rate of 10 Km/hr. During the second 60 Km at the rate of 30 Km/hr, while during the third 60 Km, its speed was 40 Km/hr. What method is more appropriate to calculate the average speed?
Atmosphere pressure is the example of:
A ________ is a range of numbers inferred from the sample that has a certain probability of including the population parameter over the long run.
For a particular data set the Pearson's coefficient of skewness is greater than zero. What will be the shape of distribution?
What factor determines the shape of the t-distribution?
Hypergeometric probability distribution has
The proportion of males in Pakistan is at least 0.48, the alternative hypothesis H1 is
If a significance level of 5% is used rather than 1%, the null hypothesis is:
Serious disadvantage of using range as a measure of dispersion is that it is based on only:
In a binomial experiment successive trials are:
The total number of samples when sampling is done without replacement is equal to:
In how many ways, a team of 11 players can be chosen from a total of 16 players?
If f(x, y) is bivariate probability density function of continuous random variables X and Y then marginal density function of Y i.e. h(y) is:
By definition f(y | x) = ________
A judge can acquit a guilty person is the example of
The shape of the Poisson distribution is:
Which of the following is correct option to find P(X + Y ≤ 1) ?
Which of the following is a measure of absolute dispersion?
The value of x2 can never be
In normal distribution, β2 = ________:
If mean of X2 distribution is k then variance will be:
In sampling from a large population with sigma = 35, the standard error of the mean is found to be 4 next. The size of the sample used is:
A good way to get a small standard error is to use a ________.
If total probability of joint probability distribution f(x, y) is ONE then what will be the total probability of its marginal pdf h(y)?
If Xm is maximum and X0 is minimum value in a data set then formula for co-efficient of dispersion is as:
The covariance of a random variable with itself is:
The number of parameters in a Poisson distribution is (are):
Which one of the following is not a type of frequency curve?
Which one is the measure of central tendency:
For α = 0.01, the critical values of z for two tailed test are equal to:
In a one-way ANOVA:
In hypothesis testing, suppose the critical value is |Z| > 2.33. This value shows that the applied test is ________?
If P(X=x)=0, then f(x) is a ________ probability function.
An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn without replacement. It is the example of:
In hyper geometric distribution formula, N= number of units in the population, n = number of units in the sample, and k is defined as:
In case of a frequency distribution, the 7th decile is given by the formula:
From the table given below, how many students obtained marks 80 or above:
Total number of words formed by 2 vowels and 3 consonants taken from 4 vowels and 5 consonants is equal to
The weights of 7 students were measured and recorded as follows: 53.0, 54.5, 57.2, 51.7, 57.4, 50.5, 52.8 The stem part is:
For test hypothesis Ho:μ 1 = μ 2 and H1:μ1 < μ2, the critical region at 0.05 level of significance and n > 30
Which statement is true for a discrete Uniform distribution?
Dividing interquartile range by 2 we get:
Which of the following is a characteristic of the normal distribution:
The parameter of the chi-square distribution is ________.
For any two estimators T1 and T2, if VAR(T1) < VAR(T2), then T1 is:
From the given data, which one of the following chart we can draw:
Which scale of measurementis more suitable in the following example? The number of response given in a specified time period.
The probability of an event always lies between:
E(4X + 5) = ________
In normal distribution, β1 = ________:
When the population is normally distributed, population standard deviation is unknown and the sample size is n = 15, the confidence interval for the population mean is based on
What is the median for the following data: 1, 1, 2, 2, 5, 5, 7, 7, 7
The degrees of freedom for a t-test with sample size 14 is:
An experiment was conducted to estimate the mean yield of a new variety of wheat. A sample of 20 plots gave a mean yield of 2.9, and a 95% confidence interval of (2.48, 3.32). This means:
What is the graphical shape of the chi-square distribution?
From the table given below, how many students obtained marks between 60 and 69?
A fair coin is tossed three times. What is the probability that at least one head appears?
A diagram in which each circle is divided into different sectors is called
The degrees of freedom for a t-test with sample size 6 is:
β is the probability of:
The conditional probability function f(x|1) = ________
To determine a sample size which test we use ________.
Which of the following is an unbiased estimator of population σ2?
For Platykurtic distribution, b2 (moment ratio) will be:
Value of harmonic mean is lower than ________.
When we draw the sample with replacement, the probability distribution to be used is:
If S.D(X) = 5 then S.D(\(2X + 5 \over 2\)) = ________
The mean of a distribution is 30, the mode is 24 and the standard deviation is 4, then the coefficient of skewness will be:
________ is a range of numbers inferred from the sample that has a certain probability of including the population parameter over the long run.
Positive square root of variance is known as:
Which type of the curve is represented by the following shape?
In a cumulative frequency polygon, the cumulative frequency of each class is plotted against:
Suppose that a sample space S consists of four simple events: A, B, C, and D. That is S = {A, B, C, D}. If P(A) = .4, P(B) = .3, P© = .2, what is P(D)?
Dividing mean deviation by mean we get a pure number known as
What is 'fm' in the formula of mode:
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