Question 121 out of 1 points As a very general rule frequency distributions

# Question 121 out of 1 points as a very general rule

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Question 12 1 out of 1 points As a very general rule, frequency distributions should have ____ categories. Correct Answer: about 10 Question 13 1 out of 1 points The crude birth rate of a city that has 250 births in a year and a population of 7500 would be found by using which of the following? Correct Answer: crude birth rate = (250/7500) ´ 1000 Question 14 1 out of 1 points TABLE 2.1 POLITICAL PARTY MEMBERSHIP IN TWO COMMUNITIES PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist 9 11 TOTALS: 264 64 In Table 2.1, what is the ratio of Socialists to Democrats in Community B?
Correct Answer: 11:21 Question 15 1 out of 1 points Proportions and percentages, ratios and rates are all ways of expressing Correct Answer: relative frequencies. Question 16 1 out of 1 points Forty of every two hundred students attend all of their classes. What percentage of the student body is this? Correct Answer: 20% Question 17 1 out of 1 points To find the ratio of smokers to non-smokers, you would Correct Answer: divide the number of smokers by the number of non- smokers. Question 18 1 out of 1 points TABLE 2.1 POLITICAL PARTY MEMBERSHIP IN TWO COMMUNITIES PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist 9 11 TOTALS: 264 64 In Table 2.1, which community has the higher proportion of Independents? Correct Answer: Community B Question 19 1 out of 1 points TABLE 2.1 POLITICAL PARTY MEMBERSHIP IN TWO COMMUNITIES PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist 9 11
TOTALS: 264 64 In Table 2.1, what percentage of Community A are Republicans? Correct Answer: (103/264) ´ 100 = 39.02 Question 20 1 out of 1 points A possible problem with open-ended or unequal intervals is that they Correct Answer: do not permit the computation of midpoints.

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