HIM 4331 Midterm Test Questions and Answers Already Passed
Quiz 1 - Answers----
True or False. A study finds that the mean amount spent on produce per visit to a grocery store by the
customers in the sample is $12.84. This is an example of a: - Answersstatistic
Imagine that the U.S. federal government had the means to survey all high school seniors in the U.S.
concerning their plans for future education and employment, and found that 50 percent were planning
to attend a 4-year college or university - Answersparameter
A health club is interested in knowing how many times a typical member uses the club in a week. They
decide to ask every tenth customer on a specified day to complete a short survey including information
about how many times they have visited the club in the past week. What kind of sampling is this? -
Answerssystematic
The manager of a department store decides to measure employee satisfaction by selecting four
departments at random and conducting interviews with all the employees in those four departments.
What type of survey design is this? - Answerscluster
Which is not a qualitative variable? - Answerspulse rate
Number of visits per week is what kind of data? - Answersquantitative-discrete
What type of measurement scale is being used when you measure blood type? - Answersnominal
Which is a continuous variable? - AnswersAmount of time students studied for a Biology quiz
What graph is not used for categorical data? - Answershistogram
True or False. The relative frequency of a value that occurs 10 times in 100 observations is ten. -
AnswersFalse
Quiz 2 - Answers-----
The midterm grades on a chemistry exam, graded on a scale of 0 to 100 are below. Which grade is the
outlier in this data? 64, 65, 65, 68, 70, 72,75, 75, 75, 76,78, 78, 81, 83, 84, 98, 100, 100, 120 -
Answers120
In a class of 35 students, seven students received scores in the 70-79 range. What is the relative
frequency of scores in this range? - Answers7/35
You get data from the U.S. Census Bureau on the median household income for your city. Which chart is
the better choice to group and display this data? - Answershistogram
You collect data on the color of cars driven by students in your statistics class, the best chart to display
the data is: - Answersbar chart
, Your daughter brings home test scores showing that she scored in the 80th percentile in math and the
76th percentile in reading for her grade. This means that your daughter scored ________ than 80
percent of the students in her grade on math and _________than 76 percent of the students in reading.
- Answersbetter; better
You had to wait 90 minutes in the emergency room of a hospital before you could see a doctor. You
learn this wait time was in the 82nd percentile of all wait times. This means that ______ percent of
patients had a shorter wait time than you, and only ______ percent had a longer wait time. -
Answers82%; 18%
The median hours to complete a 60-minute exam was 40 minutes. You finished in 30 minutes. Your time
was _______ than the median indicating that you finished _____ than half of the exam takers. -
Answersfaster; before
You have numeric data with several outliers, which is the best measure to reflect the average value of
the data set? - Answersmedian
You are given that the mean = 15 and standard deviation = 4.3. Which is the correct formula to calculate
the number that is two standard deviations above the mean? - Answers5 + (2)(4.3)
In a biology class, the scores on the final exam were normally distributed, the mean = 85, and a standard
deviation = 5. Susan got a final exam score of 95. Select the correct formula to compute her Z-score? -
Answers(95 - 85)/ 5
Quiz 3 - Answers----
True or False. In a normal distribution, the mean, median and mode are all equal. - Answerstrue
Your data is normally distributed. This implies that approximately ________ percent of your data will be
above the mean. - Answers50%
The distribution of height in centimeters for girls aged five years and no months is: X ~ N(109, 4.5).
Which is the correct formula to calculate a Z score for a height of 112 centimeters? - Answersz = (112 -
109) / 4.5
The distribution of height in centimeters for girls aged five years and no months has the distribution: X ~
N(109, 4.5). The Z-score for one girl is −0.89. This means that she is ______ the average height for girls
of age five years and no months by _______ standard deviations. - Answersbelow; 4.5
True or False. According to the Empirical Rule, given a mean=800 and standard deviation = 150, the
formula for the finding the percentage less than 600 would be (600-150)/800. - AnswersFalse
True or False. If you draw random samples of size n, then as n increases, the sample means form a
normal distribution called the sampling distribution. - AnswersTrue
Quiz 1 - Answers----
True or False. A study finds that the mean amount spent on produce per visit to a grocery store by the
customers in the sample is $12.84. This is an example of a: - Answersstatistic
Imagine that the U.S. federal government had the means to survey all high school seniors in the U.S.
concerning their plans for future education and employment, and found that 50 percent were planning
to attend a 4-year college or university - Answersparameter
A health club is interested in knowing how many times a typical member uses the club in a week. They
decide to ask every tenth customer on a specified day to complete a short survey including information
about how many times they have visited the club in the past week. What kind of sampling is this? -
Answerssystematic
The manager of a department store decides to measure employee satisfaction by selecting four
departments at random and conducting interviews with all the employees in those four departments.
What type of survey design is this? - Answerscluster
Which is not a qualitative variable? - Answerspulse rate
Number of visits per week is what kind of data? - Answersquantitative-discrete
What type of measurement scale is being used when you measure blood type? - Answersnominal
Which is a continuous variable? - AnswersAmount of time students studied for a Biology quiz
What graph is not used for categorical data? - Answershistogram
True or False. The relative frequency of a value that occurs 10 times in 100 observations is ten. -
AnswersFalse
Quiz 2 - Answers-----
The midterm grades on a chemistry exam, graded on a scale of 0 to 100 are below. Which grade is the
outlier in this data? 64, 65, 65, 68, 70, 72,75, 75, 75, 76,78, 78, 81, 83, 84, 98, 100, 100, 120 -
Answers120
In a class of 35 students, seven students received scores in the 70-79 range. What is the relative
frequency of scores in this range? - Answers7/35
You get data from the U.S. Census Bureau on the median household income for your city. Which chart is
the better choice to group and display this data? - Answershistogram
You collect data on the color of cars driven by students in your statistics class, the best chart to display
the data is: - Answersbar chart
, Your daughter brings home test scores showing that she scored in the 80th percentile in math and the
76th percentile in reading for her grade. This means that your daughter scored ________ than 80
percent of the students in her grade on math and _________than 76 percent of the students in reading.
- Answersbetter; better
You had to wait 90 minutes in the emergency room of a hospital before you could see a doctor. You
learn this wait time was in the 82nd percentile of all wait times. This means that ______ percent of
patients had a shorter wait time than you, and only ______ percent had a longer wait time. -
Answers82%; 18%
The median hours to complete a 60-minute exam was 40 minutes. You finished in 30 minutes. Your time
was _______ than the median indicating that you finished _____ than half of the exam takers. -
Answersfaster; before
You have numeric data with several outliers, which is the best measure to reflect the average value of
the data set? - Answersmedian
You are given that the mean = 15 and standard deviation = 4.3. Which is the correct formula to calculate
the number that is two standard deviations above the mean? - Answers5 + (2)(4.3)
In a biology class, the scores on the final exam were normally distributed, the mean = 85, and a standard
deviation = 5. Susan got a final exam score of 95. Select the correct formula to compute her Z-score? -
Answers(95 - 85)/ 5
Quiz 3 - Answers----
True or False. In a normal distribution, the mean, median and mode are all equal. - Answerstrue
Your data is normally distributed. This implies that approximately ________ percent of your data will be
above the mean. - Answers50%
The distribution of height in centimeters for girls aged five years and no months is: X ~ N(109, 4.5).
Which is the correct formula to calculate a Z score for a height of 112 centimeters? - Answersz = (112 -
109) / 4.5
The distribution of height in centimeters for girls aged five years and no months has the distribution: X ~
N(109, 4.5). The Z-score for one girl is −0.89. This means that she is ______ the average height for girls
of age five years and no months by _______ standard deviations. - Answersbelow; 4.5
True or False. According to the Empirical Rule, given a mean=800 and standard deviation = 150, the
formula for the finding the percentage less than 600 would be (600-150)/800. - AnswersFalse
True or False. If you draw random samples of size n, then as n increases, the sample means form a
normal distribution called the sampling distribution. - AnswersTrue
