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Name: _________________________________________
1. Restaurant:
_____________________________________________________________________
2. Food item 1: __________________________________
Calories: _____________________________________
Food item 2: __________________________________
Calories: _____________________________________
Food item 3: __________________________________
Calories: _____________________________________
Food item 4: __________________________________
Calories: _____________________________________
Food item 5: __________________________________
Calories: _____________________________________
3. Find the mean of the calories of your food items.
Ex. Add all of the values. 500 + 306 +212 + 500 + 112= 1630 Divide by the number of quantities.
1630/5= 326. The mean or average of the 5 food items would be 326.
Put your values here:
_______+________+_________+________+________=_________
Take your total and divide by 5.
Your total ________
5
The mean is ____________________.
4. Find the median.
Put the numbers in order from least to greatest.
112, 212, 306, 500, & 500
Pick the number that is in the center of all the numbers. 112, 212, 306, 500, & 500
The median is 306.
Place your numbers in order from least to greatest here.
_______,________,_______,_______,________
What number is circled? _______
This is your median.
5. What is the mode?
The mode is the number that occurs most often in the set of numbers.
112, 212, 306, 500, & 500 The mode of this set is 500 because it occurs twice.
Find the mode of your set of numbers. The mode is _____________________. Also there can be
no mode, if you have no mode simply write no mode in the space above.
6. Read about mean, median, and mode at Analysing Data.
a. When is the mean used? ___________________________________________________
b. When is the median used? __________________________________________________
c. When is the mode used? ___________________________________________________
7. Which measure of central tendency do you think best represents the amount of calories at your
restaurant? Mean, median, or mode? Why? Explain which you think best represents the amount
of calories found in foods at your restaurant. What are extreme values? Do you have any in your
data set?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
8. Do you feel you have accurately represented the amount of calories in the foods found at this
restaurant? What could we do to the sample size in order to get a better indication of the
calories found in foods at your restaurant? What is your sample size? Why is sample size
important?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
9. Create a bar graph.
Calories
600
500
400
300
Calories
200
100
0
Small coke
Fruit cup
Yogurt
Chicken
Sandwich
Hamburger
Draw a bar graph of your Data:
Label each food on the x-axis and the amount of calories on the y-axis. Use the example I
provided as a guide.
Calories
Calories
10. Find 5 more food items from your restaurant. Use your previously found food items and the new
5 items; determine the mean, median, and mode.
Mean:
Median:
Mode:
How are your measures of center different from before?
______________________________________________________________________________
______________________________________________________________________________
If your measures of center are different explain why.
______________________________________________________________________________
______________________________________________________________________________
What is your new sample size? How does sample size affect measures of center?
______________________________________________________________________________
______________________________________________________________________________
11. Compare your findings with another student who has chosen the same restaurant. How are you
calculations and graphs different or the same? What accounts for the difference or similarity?
______________________________________________________________________________
______________________________________________________________________________
12. Compare your findings with another student who has chosen a different restaurant. How are
your calculations and graphs different or the same?
______________________________________________________________________________
______________________________________________________________________________
13. Look at the data from all five restaurants from fellow students. Which restaurant do you believe
is the best to eat at and why?
______________________________________________________________________________
______________________________________________________________________________