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# Purpose of descriptive statistics Essay

The general process of gathering, organizing, summarizing, analyzing, and interpreting data is called3) The performance of personal and business investments is measured as a percentage, return on investment. What type of variable is return on investment 4) What type of variable is the number of robberies reported in your city5) What level of measurement is the number of auto accidents reported in a given month6) The names of the positions in a corporation, such as chief operating officer or controller, are examples of what level of measurement7) Shoe sizes, such as 7B, 10D, and 12EEE, are examples of what level of measurement8) Monthly commissions of first-year insurance brokers are 1,270, 1,310, 1,680, 1,380, 1,410, 1,570, 1,180, and 1,420. These figures are referred to as9) A small sample of computer operators shows monthly incomes of 1,950, 1,775, 2,060, 1,840, 1,795, 1,890, 1,925, and 1,810. What are these ungrouped numbers called10) The sum of the deviations of each data value from this measure of central location will always be 011) For any data set, which measures of central location have only one value12) A sample of single persons receiving social security payments revealed these monthly benefits 826, 699, 1,087, 880, 839, and 965.

How many observations are below the median 13) A dot plot shows14) The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile15) The National Center for Health Statistics reported that of every 883 deaths in recent years, 24 resulted from an automobile accident, 182 from cancer, and 333 from heart disease. QNT 351 Final Exam. Using the relative frequency approach, what is the probability that a particular death is due to an automobile accident16) If two events A and B are mutually exclusive, what does the special rule of addition state17) A listing of all possible outcomes of an experiment and their corresponding probability of occurrence is called a18) The shape of any uniform probability distribution is19) The mean of any uniform probability distribution is20) For the normal distribution, the mean plus and minus 1.96 standard deviations will include about what percent of the observations21) For a standard normal distribution, what is the probability that z is greater than 1.7522) A null hypothesis makes a claim about a23) What is the level of significance24) Suppose we test the difference between two proportions at the 0.05 level of significance.

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