South High School



Name ___________________________Chapter 1 Review SheetData were collected on the number of text messages by each student in a large high school for one day. A boxplot of the data is shown below.177292010668000Based on the boxplot, which of the following statements is the most reasonable conclusion?There are more students with data values below the median than there are students with data values above the median.There are more students with data values between the first quartile and the median than there are students with data values between the median and the third quartile.There are fewer students with data values between the first quartile and the median than there are students with data values between the median and the third quartile.There are approximately the same number of students with data values between the first quartile and the minimum as there are students with data values between the third quartile and the maximum.The data are less spread out between the first quartile and the median than between the median and the third quartile.160020050482500The pulse rate for each person in a sample of 20 men and 20 women was recorded. The boxplots below summarize the pulse rates for the men and the women in the sample.Which of the following statements about the people in the sample must be true?There are more people between the first and the third quartiles for women than there are between the first and the third quartiles for men.The person with the lowest pulse rate is a woman.At least half of the women had higher pulse rates than three-fourths of the men.More than half of the men had lower pulse rates than three-fourths of the women.If a man and a woman were randomly selected from the 40 people, the man would have the lower pulse rate.171386553530500The number of siblings was recorded for each student of a group of 80 students. Some summary statistics and a histogram displaying the results are shown below:An outlier is often defined as a number that is more than 1.5 times the interquartile range below the first quartile or above the third quartile. Using the definition of an outlier and the given information, which of the following can be concluded?The median is greater than the mean, and the distribution has not outliers.The median is greater than the mean, and the distribution has only one outlier.The median is greater than the mean, and the distribution has two outliers.The median is less than the mean, and the distribution has only one outlier.The median is less than the mean, and the distribution has two outliers.A school is having a contest in which students guess the number of candies in a jar. The student whose guess is closest to the correct number of candies in the jar wins a prize. The number of candies guessed by male and female students is shown in the back-to-back stemplot below.160020022796500Which of the following statements is true about the distribution of guesses?The distribution of guesses for male students is skewed to the left, and the distribution of guesses for female students is skewed to the right.The distribution of guesses for male students is skewed to the right, and the distribution of guesses for female students is skewed to the left.The distribution of guesses for male and female students are both skewed to the right.The distribution of guesses for male and female students are both skewed to the left.The distribution of guesses for male and female students are both symmetric.125730050736500The prices, in thousands of dollars, of 304 homes recently sold in a city are summarized in the histogram below.Based on the histogram, which of the following statements must be true?The minimum price is $250,000.The maximum price is $2,500,000.The median price is not greater than $750,000.The mean price is between $500,000 and $750,000.The upper quartile of the prices is greater than $1,500,000.148590071374000A random sample of 25 households from the Mountainview School District was surveyed. In this survey, data were collected on the age of the youngest child living in each household. The histogram below displays the data collected in the survey.In which of the following intervals is the median of these data located?0 years old to less than 2 years old4 years old to less than 6 years old6 years old to less than 8 years old8 years old to less than 10 years old10 years old to less than 12 years oldA small town employs 34 salaried, nonunion employees. Each employee receives an annual salary increase of between $500 and $2,000 based on a performance review by the mayor’s staff. Some employees are members of the mayor’s political party, and the rest are not.Students at the local high school form two lists, A and B, one for the raises granted to employees who are in the mayor’s party, and the other for raises granted to employees who are not. They want to display a graph (or graphs) of the salary increases in the student newspaper that readers can use to judge whether the two groups of employees have been treated in a reasonably equitable manner.Which of the following displays is least likely to be useful to readers for this purpose?Back-to-back stemplots of A and BScatterplot of B versus AParallel boxplots of A and BHistograms of A and B that are drawn to the same scaleDotplots of A and B that are drawn to the same scale160020050736500Heights, in inches, for the 200 graduating seniors from Washington High School are summarized in the frequency table below.Which of the following statements about the median height is true?It is greater than or equal to 78 inches.It is greater than or equal to 72 inches but less than 78 inches.It is greater than or equal to 66 inches but less than 72 inches.It is greater than or equal to 60 inches but less than 66 inches.It is less than 60 inches.A graph (not shown) of the selling prices of homes in a certain city for the month of April reveals that the distribution is skewed to the left. Which of the following statements is the most reasonable conclusion about the selling prices based on the graph?The mean is greater than the median.The median is the average of the first quartile and the third quartile.There are fewer selling prices between the first quartile and the median than there are between the median and the third quartile.There are more selling prices that are less than the mean than selling prices that are greater than the mean.The value of maximum minus third quartile is less than the value first quartile minus minimum.The amount of time required for each of 100 mice to navigate through a maze was recorded. The histogram below shows the distribution of times, in seconds, for the 100 mice.228600017907000 Which of the following values is closest to the standard deviation of the 100 times?2.5 seconds10 seconds20 seconds50 seconds90 seconds-1143005016500-67946372872000114300-2286000012.. 11430012255500 ................
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