Questions and Answers of Statistics Informed Decisions Using Data

(a) Which of the two race classifications have the highest beginning and current salaries and what are those amounts?(b) What are the correlation coefficients between the two salaries for
(a) What type of vehicle has the greatest weight and fuel capacity? (b)What are the correlation coefficients for curb weight and fuel capacity for both automobiles and trucks?(c) How would you
(a) Which gender has the highest beginning and current salaries and what are those amounts?(b) What are the correlation coefficients between the two salaries for females and males?(c) How would you
(a) When measuring the correlations of width and length of automobiles and trucks, is there a great deal of difference? How does the graph answer this question?(b) If you knew the width of a truck,
(a) Is the distribution normal?(b) What are the mean, standard deviation, and number of cases for this distribution?(c) What was the age of approximately 71 people?(d) How many people were aged
(a) What is the range of the commute time for 50% of the individuals? (b) What percentage of the people commuted for 35 to 45 minutes?(c) Ninety percent of the people commuted at least how many
(a) Are the data skewed to the right, skewed to the left, or normal? (b) What are the average number of accidents for this group?(c) How many of this group reported one accident?(d) How many people
(a) Approximately what percentage of people had one or zero accidents?(b) Approximately what percentage of people had three or less than three accidents? (c) How many accidents did the top 25% of
(a) Do the data appear to be normally distributed?(b) What are the mean, the standard deviation, and the number of observations in the database?(c) What is the frequency for the categories between
In the salary range from $30,000 to $32,000, how do males and females compare?
In the category of $$8,000$ to $$10,000$ (one of the lowest salary intervals), how do males and females compare?
What is the starting salary for exactly 5% of the male population?
In general, what does the graph tell us about how the various starting salaries are distributed between the females and males.
How many married and unmarried people have a high school degree?
Which category of education shows the most difference between married and unmarried?
Which category of education contains the most people?
Does the population as a whole seem to be well educated?
What does the graph tells us about a possible relationship between marital status and level of education?
(a) What age interval contained the most females?(b) What age interval contained the most males?(c) By looking at the graph, can you estimate if there is a significant difference between the ages of
(a) By looking at the graph does it appear that program status and level of education are related?(b) Which of the six categories contains the most observations? (c) Which category has the least
(a) What is the most frequently occurring year of education interval for unmarried people?(b) What is the most frequently occurring year of education interval for married people?(c) How many
(a) How many customers who did not have contact with employee are strongly satisfied?(b) How many customers who had contact with employee are neutral?(c) How do most customers who did not have
(a) What is the most frequent income for females?(b) What is the most frequently income for males?(c) What percentage of females had an income that ranges from 9.5 to 10.5?(d) What percentage of
What are the lower and upper limits, in dollars per hour, for the middle 50% (interquartile values) of this population? And what is the value of the interquartile range?
What are the lower and upper limits, in dollars per hour, for the first 25% (first quartile) of the population?
Excluding the outliers and extremes, what are the lower and upper dollar amounts for the top 25% (fourth quartile)?
Are there any outliers, if so then what do they tell you?
What is the median of the distribution?
What is the shape of the distribution?
What pattern do the rectangular bars to the right of the mean (8.9 hours) of the histogram take on when compared with the right whisker of the boxplot?
What pattern do the bars take to the left of the mean when compared with the left whisker of the boxplot?
What are the measures of central tendency used with the boxplot and histogram?
What are the measures of variability for the boxplot and histogram?
What advantage of using the boxplot can you identify by looking at these two graphs?
(a) What are the minimum and maximum ages, excluding outliers and extremes?(b) What is the age of the outlier?(c) What are the limits of the interquartile range?(d) What is the interquartile range
(a) What are the minimum and maximum amounts spent, excluding outliers and extremes?(b) How much was the sale for the most extreme case??(c) What are the limits of the interquartile range?(d) What is
(a) What are the minimum and maximum amount of time passing since the last sale?(b) What are the limits of the interquartile range?(c) What is the interquartile range for this distribution?(d) What
(a) What are the minimum and maximum high values for the price of this stock?(b) What are the limits of the interquartile range for this stock’s high price? (c) What is the interquartile range for
(a) What are the minimum and maximum dollar values for the beginning salaries when outliers are omitted?(b) What are the limits of the interquartile range for this salary data?(c) What is the
What are the median ages, ranked from lowest to highest, for the three race categories?
What are the race category, age, and gender of the one outlier in the graph?
What are the ranks, from the lowest to highest, for the three race categories in terms of overall ranges of ages? (Give the values for these three ranges.)
What are the interquartile ranges for the “White,” “Black,” and “Other” race categories?
Just by looking at the graph, what can you say about the distributions?
(a) What are the median heat values for both batches?(b) What are the minimum and maximum heats for the premium batch (exclude the outliers)?(c) What are the minimum and maximum temperatures for the
(a) Which distribution approximates the normal distribution?(b) Which of the two distributions has the highest median resale value and what is this value?(c) What are the highest resale values for
(a) What is the value of the most extreme value in the male salary distribution?(b) What is the most extreme salary for the females?(c) If you exclude the outliers and extremes, what are the highest
(a) What type of transaction has the largest interquartile range, and what is that value?(b) Which type of transaction recorded the highest expenditure as measured by the median, and what was that
(a) Which gender has the largest interquartile range, and what are both these values?(b) Which gender recorded the highest expenditure as measured by the median, and what was that amount?(c) Which
What are the median values for the number of years living at the current residence for the 8,083 customers who make up the eight groups depicted in the clustered boxplot?
When outliers and extremes are excluded, which of the eight groups has the greatest range of years living at their current residence? What are the highest and lowest numbers of years of residence for
What are the upper and lower limits, in years of residence, for the middle 50%(interquartile values) for the females earning more than $75? And what is the value of the interquartile range?
What is the age and educational level of the uppermost outlier in the male category for those earning more than $75,000 per year?
Which income category provides evidence supportive of gender differences in the upper and lower limits for the middle 50% and what are the values?
(a) What is the median age of the unmarried females?(b) Which of the four groups had the largest interquartile range and what were the upper and lower limits?(c) What is the median age for married
(a) What is the median age for males and females that indicated they were very happy?(b) Which group had the lowest median age, and what is their happiness level?(c) What is the age range for the
(a) What is the interquartile range for the female custodial employees? (b) Which employment category, manager or clerical, has the largest median difference between males and females in months
(a) What is the median income for females with a high school degree? (b) Which of the six distributions had the largest interquartile range, and what were the upper and lower limits?(c) What is the
(a) What are the highest numbers of years of education completed for these three race categories?(b) Which group had the lowest median number of years of education, and what is the number of
What does the graph tell us about the strength, direction, and shape of the distribution that describes the two variables of advertising expenditures and the sales amount?
What is the value of detrended sales if the retail store spends 2.5 on advertising?
What can be learned about sales amounts from the scatterplot if the retail store decides not to spend any money on advertising?
What is the value of detrended sales if the retail store spends 4.0 on advertising?
The upper confidence limit bisects which bivariate value?
(a) Which department had the most visits?(b) Which department had the second-most visits?(c) Which two ranked lowest of all departments?(d) What is the rank order of the departments when ordered from
(a) Is there a trend between the years of 60 and 68 years of age?(b) What happens to the frequency of death as the age of 74 is reached?(c) What is the approximate year when the males lifespan peaks
(a) What happens to the mortality rates when daily calorie intake increases to 2,400 per day?(b) What happens to the mortality when calories reach about 3,400 per day?(c) How would you describe the
(a) What percentage of the people live the greatest distance from the store?(b) What is the percentage of people who live 30 or more miles from the store?(c) Once the peak distance of 1 to 5 miles
(a) What was the most credit card debt, and what was the income less than or more than 1 million?(b) Was there an identifiable pattern for credit card debt when income surpassed $$575,000,$ and if
(a) What is the overall trend for education and household income prior to earning the college degree?(b) What happens to the trend line once the college degree is earned?(c) What does the trend line
What is the age interval for those having the most debt?
What is the age interval for those having the least amount of debt?
At what age interval are the spending differences between genders the greatest?
Is there a possible interaction between age and gender?
What is the dollar amount recorded for the highest debt?
What is the age interval for those having the most primary card debt?
What is the highest recorded monthly primary card expenditure?
At what age interval(s) would you estimate that the gender differences are the greatest?
Is there a possibility that there is an interaction between age and gender when looking at expenditures on the primary credit card?
Do males or females spend more for the primary credit card?
What are the mean dollar amounts for males on their secondary and primary credit cards?
What are the mean dollar amounts for females on their secondary and primary credit cards?
What does the downward slope for the primary card (solid line) tell us?
What does the downward slope for the secondary card (dotted line) tell us?
When the slopes for both credit cards are the same (parallel lines), does this provide any useful information?
What were the credit card expenditures for males and females in January?
In how many months did the females outspend the males?
Which month recorded the highest expenditure for males?
What can you say about the overall pattern of expenditures for males and females?
What were the highest and the lowest monthly expenditures regardless of gender?
(a) What is the mean patient age for those suffering from post-stroke depression and are hypertensive?(b) What is the mean patient age for those suffering from post-stroke depression and are not
(a) What is the mean patient age for those suffering from post-stroke depression and diabetes mellitus?(b) What is the mean patient age for those suffering from post-stroke depression and are not
(a) Is there a difference for survival time for those receiving chemotherapy?(b) For those patients suffering from a disease relapse, what is the difference (in weeks) of survival for those who had
(a) What are the mean household incomes for males and females who have a post-undergraduate degree?(b) At what level of education are male and female mean incomes the closest?(c) What is the overall
(a) What can you say about the overall trend for males and females? (b) Which category for years with employer shows the greatest gender difference?(c) Do female employees working for an employer
Are the data skewed to the right, skewed to the left, or normal?
What are the mean, the standard deviation, and the number of observations in the database?
In this database, how many years of education did most of the people complete?
In this database, how many years of education did the fewest number of people complete?
Just by looking at the graph, would you say that the data are normally distributed?

Showing 100 - 200 of 1213