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Q1) The independent variable can also be called a(n)
i) free variable.
ii) explanatory variable. .
iii) suggestive variable.
iv) outcome variable
Q2)Which of the given must not be done when constructing frequency distribution?
i) Choose the number of classes desired
ii) Determine the range
iii) Use a class width with an even number
iv) Use classes which are mutually exclusive
Q3) What are the boundaries of the class 1-16?
i) 15
ii) 1 and 16
iii) 0.5 and 16.5
iv) 8.5 and 15
Q4) Range 31.57 - 34.03 is not good choice for class boundaries because
i) it is too narrow
ii) the class limits are difficult to interpret
iii) it is too wide
iv) it has an odd width
Q5) Determine the class with the greatest number of data values.
i) 70
ii) 90
iii) 60
iv) 40
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
What is the probability that a particular driver had exactly two speeding violations?
To test whether there is a significant mean difference among the three.
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
At.01 significance level, can we conclude that 30-year mortgage rate for small banks is less than 6%? Evaluate the p-value.
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
Cores on two tests have a bivariate normal distribution; and that correlation of 2 scores is 0.8. Determine the probability that sum of the student's scores on 2 tests will be greater than 200?
Given that the student you choose is a senior, find out the probability of selecting a non-senior?
For thefts involving more than $1,000, there is an inverse relationship between the value of the goods stolen and the length of the prison sentence given to the thief.
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
Explain the effect outliers can have on the analysis of the center of this data set. Based on the box-plot and histogram you created for problem 1, do there appear to be any outliers?
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