The cost of taking your pet aboard the air flight with you in the continental US varies according to the airlines. The five number summary for prices based on a sample of major US airlines was:
Min = 60, Q1 = 100, Median = 110, Q3 = 125, Max = 150
If we were to build the box plot for this data, the box would stretch between which two values?
What would be the lowest value? What would be the highest value?
A student survey was conducted at a major university, and data were collected from a random sample of 750 undergraduate students. One variable that was recorded for each student was the student's answer to the question "With whom do you find it easiest to make friends? Opposite sex/same sex/no difference."
These data would be best displayed using which of the following?
- Stemplot
- Boxplot
- Pie chart
- IQR
- Histogram
The distribution of the amount of money spent by first-time gamblers at a major casino in Las Vegas is approximately normal in shape with a mean of $600 and a standard deviation of $120. According to the standard deviation rule, almost 84% of gamblers spent more than what amount of money at this casino?
- $360
- $480
- $600
- $720
- $840
The distribution of the IQ (Intelligence Quotient) is approximately normal in shape with a mean of 100 and a standard deviation of 15. According to the standard deviation rule, what range of IQ scores do many (68%) people have?
- Between 85 and 115
- Between 70 and 130
- Between 55 and 145
- Less than 85 or more than 115
- Above 100