Savy statistics

Savy statistics

Don't be "mean"

Crafty coordinates

I forgot, the box plot

What would you use?

100

True or False...This is an example of a statistical question;
How many people in your family eat breakfast?

What is "False"

100

Which one of these values gives the most occuring number?
a. mean
b. median
c. mode

c. mode

100

Which quadrant is (-3, 4) in?

quadrant II

100

True or False...A box plot separates all the data into four categories?

True

100

You want to use a graph that shows ranges of numbers at the bottom. Which graph would you use?
a. dot plot
b. histogram
c. stem and leaf

b. histogram

200

True or False...This is an example of a statistical question;
Record the amount of time each person in your family takes a shower.

What is "true"

200

Find the mean of these numbers:
22, 22, 23, 21

22

200

Which quadrant has both integers negative, negative?

quadrant III

200

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

200

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.

300

A classmate wants to find out how much time students spend playing games each night. Which of the following would be the best method to gather data?
a. interview all the students in their class
b. interview random students at lunch
c. interview a sample of 100 students from each grade

c. interview a sample of 100 students from each grade

300

What is the median for this set of data?
22, 21, 23, 25
a. 22
b. 22.5
c. there is no median

b. 22.5 (if you guessed a, you forgot to put the numbers in order from least to greatest)

300

If you reflect (3, 4) across the x axis. What would be the new coordinates?

(-3, 4)

300

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

300

Which one of the following graphs would make it easiest to find the mode? (justify your answer)
a. stem and leaf
b. dot plot
c. bar graph

b. dot plot because it will show the amount of dots for a paricular number

400

You want to create a bar graph for comparing the different kind of shoes students wear at your school. After surveying several students, you find out there are too many brands of shoes to graph. Which of the following would be a solution to better graph your data?
a. only pick the 5 most liked shoes
b. give 7 shoes to pick from when surveying
c. make a graph anyway

b. give 7 shoes to pick from when surveying

400

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

400

which one of these coordinates would form a right triangle to the coordinates (-2, 4) & (-2, 0)?
a. (0, 2)
b. (0, 0)
c. (0, -2)

b. (0, 0)

400

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)

400

Which one of the follwing scenarios would be best for using a cirlce 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

500

Which of the following surveys would create the best statistical data? (justify your answer)
a. finding the average amount of time students watch tv
b. finding the average amount of time students watch tv each night
c. finding the average amount of time students watch tv on the weekend?

b. finding the average amount of time students watch tv each night

500

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)

500

When you translate (-2, -3) 5 units up and 3 units right. What are your new coordinates?

(1, 2)

500

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.

500

Which one of these graphs is best for showing a comparison of two NFL quarterbacks?
a. box plot
b. double bar graph
c. stem and leaf

b. double bar graph

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