Stat 121 Lesson 7 questions with
verified answers already passed
Fill in the blank: When data are arranged in ascending numerical order,
the mean is the value which _____________________ . - correct
answer ✔✔b. balances the data
True or false: Statisticians prefer the mean over the median even when
outliers are present in the data. - correct answer ✔✔b. False
True or false: The mean is affected by every value in a data set. - correct
answer ✔✔a. True
For the weights of female bears (measured in pounds) displayed by this
histogram, which is the "best" measure of center, the mean or the
median? - correct answer ✔✔b. The median
For the weights of bears given in the histogram in question 4, the mean
is 243. Is the median larger or smaller than the mean? - correct answer
✔✔b. Smaller
, True or false: Since the weights of bears displayed by the histogram in
question 4 were measured in pounds, the mean in context should be
given as 243 pounds. - correct answer ✔✔a. True
Referring to the histogram given in question 4, which of the following
boxplots represents those data? - correct answer ✔✔a. Graph A
True or false: 75% of the data are between 12 and 15. - correct answer
✔✔b. False
Refer to the boxplot of bear head lengths given in question 8 above.
True or false: Since the whisker (line) on the left of the central box is
shorter than the whisker (line) on the right of the central box, the
percent of head lengths below 12 is less than the percent of head
lengths above 15. - correct answer ✔✔b. False
Refer to the boxplot of bear head lengths given in question 8 above.
True or false: The line inside the box at 13.5 represents the mean. -
correct answer ✔✔b. False
The five number summary for the length of duration in minutes of Old
Faithful's eruptions is [1.7, 2.3, 4.0, 4.4, 5.2]. (Note: These are not the
data.) Approximately what percentage of the eruptions last longer than
2.3 minutes? - correct answer ✔✔e. 75%
verified answers already passed
Fill in the blank: When data are arranged in ascending numerical order,
the mean is the value which _____________________ . - correct
answer ✔✔b. balances the data
True or false: Statisticians prefer the mean over the median even when
outliers are present in the data. - correct answer ✔✔b. False
True or false: The mean is affected by every value in a data set. - correct
answer ✔✔a. True
For the weights of female bears (measured in pounds) displayed by this
histogram, which is the "best" measure of center, the mean or the
median? - correct answer ✔✔b. The median
For the weights of bears given in the histogram in question 4, the mean
is 243. Is the median larger or smaller than the mean? - correct answer
✔✔b. Smaller
, True or false: Since the weights of bears displayed by the histogram in
question 4 were measured in pounds, the mean in context should be
given as 243 pounds. - correct answer ✔✔a. True
Referring to the histogram given in question 4, which of the following
boxplots represents those data? - correct answer ✔✔a. Graph A
True or false: 75% of the data are between 12 and 15. - correct answer
✔✔b. False
Refer to the boxplot of bear head lengths given in question 8 above.
True or false: Since the whisker (line) on the left of the central box is
shorter than the whisker (line) on the right of the central box, the
percent of head lengths below 12 is less than the percent of head
lengths above 15. - correct answer ✔✔b. False
Refer to the boxplot of bear head lengths given in question 8 above.
True or false: The line inside the box at 13.5 represents the mean. -
correct answer ✔✔b. False
The five number summary for the length of duration in minutes of Old
Faithful's eruptions is [1.7, 2.3, 4.0, 4.4, 5.2]. (Note: These are not the
data.) Approximately what percentage of the eruptions last longer than
2.3 minutes? - correct answer ✔✔e. 75%
