Savy statistics
True or False...This is an example of a typical value; I found the average of my pants size.
What is "true"
What is the mode for the following set of numbers?
24, 10, 11, 12, 23, 22, 24, 6, 15
What is 24?
True or False...A box plot separates all the data into four categories?
True
You want to use a graph that shows ranges of numbers at the bottom. Which graph would you use? a. bar graph b. histogram c. scatter plot
b. histogram
True or False... Double bar graphs compare two sets of data.
What is "true"
Find the mean of these numbers: 22, 22, 23, 21
22
You are searching for car prices. You can afford a car that will sell for about $15,000. You know the mean, median, and mode at a certain dealership. Which typical value would be the most helpful in deciding whether you can afford a car at this dealership?
What is the median? Half of the prices will be under this amount and half will be above this amount. Knowing the middle ground will be able to tell you what the range of prices are.
The 5 data points that make up the box plot are the least value, inner quartile, upper quartile, greatest value, and... a. mode b. range c. median
c. median
True or False... A box plot is a good graph to show the mean temperatures of different cities?
False, a box plot only shows ranges of data.
When gathering data for shoe sizes the following range was noted.
9.5, 9, 11, 12, 10.5, 11, 9.5, 8.5, 10, 9, 16
Size 16 is the _____ in the data set.
What is an outlier?
The manager at a toy store wants to reorder the items that sell the best. Which typical value should he use to decide which items to reorder?
Median, Mean, or mode
If you were to construct a box plot for the following data what value would be your upper quartile? data set: 21, 24, 25, 26, 27, 30, 31
30
The following graph makes it easy to compare the way a budget is set up for one year.
What is a circle graph?
Which of the following surveys would create a no correlation?
A. Test scores and athletic ability
B. Temperature and heating bill
C. Length of investments and interest earned
A. Test scores and athletic ability
For the following set of data, 47 is considered an outlier. Which of the following would the outlier effect the most? (justify your answer) data set; 22, 22, 23, 28, 30, 31. a. median b. mean c. mode
a. median (the median moves from 23 or 28) the mean only moves 3 points from 26 to 29
At a cooking competition James receives 152 points for execution and 110 points for presentation. Execution makes up 65% of his total score, while presentation makes up 35% of his score. What is Jame's final score?
What is 137.3
If you were to construct a box plot for the following data, what would be your inner quartile range? data set: 45, 47, 48, 50, 52, 52, 57
5; (52-47)
Which one of the following scenarios would be best for using a circle graph? a. the percentage of time spent on hw in each grade level b. the different food groups present during school lunch c. the different holidays celebrated
a. percentage of time spent on hw in each grade level
Which of the following surveys would create a positive correlation?
A. Test scores and athletic ability
B. Temperature and heating bill
C. Temperature and Ice Cream Sales
C. Temperature and Ice Cream Sales
Thomas Jones Bob wants to get an average of 90% on all his tests. So far he has scored a 85, 88, 91, and 93 on four tests. What must he get on his 5th test to get an average of 90% on all his tests?
a 93! (5 times 90 = 450. minues the total points of the 4 test...357. 450 - 357 = 93)
Ellen buys two bags for $175 each at one store and three bags for $150 each at a different store. How much did Ellen pay on average per bag?
What is $160?
Which one of the following situations best utilizes the box plot? (justify your answer) a. showing the mode temperatures of different cities b. showing a range of temperatures in different cities c. using the median temperature of box plots to compare different cities
b or c...box plots are good for showing ranges of data. They also can compare different median scores.
Which one of these graphs is best for showing a comparison of two NFL quarterbacks throughout 5 years? a. box plot b. line graph c. circle graph
b. line graph