Statistical vs. Non-statistical
"How tall is the teacher?" Identify if this question is statistical or non-statistical.
Non-statistical (because there is only one specific answer.)
What is the number represented by the tally marks: lllll ll
7
In statistics, what term refers to how often a specific value or piece of data occurs?
frequency
Look at this sentence: "The cat sat on the mat." What is the frequency of 3-letter words?
5
"How tall are the students in class 1?" Identify if this question is statistical or non-statistical.
Statistical (Because there can be different answers.)
To present the number 5 in a tally chart, you draw four vertical lines and one of these.
a diagonal line or slash
If a frequency table column shows the number 18, what is the exact number of individual tally marks that should be next to it?
lllll lllll lllll lll (18)
Look at this sentence: "Data is fun to collect." What is the frequency of 4-letter words.
1
what type of data question anticipates variability and cannot be answered with a single, definite number?
Statistical question
Draw or describe the tally marks needed to represent a frequency of 14.
Two groups of 5 bundles and 4 individual lines (lllll lllll llll)
To find the total number of people surveyed using the frequency table, you must do this to the entire frequency column.
add them all together
In the phrase "Tally charts and tables", what is the frequency of the letter 't'?
3
Classify the question: "How many letters are in the word data?"
Non-statistical
If a tally chart has three fully crossed bundles (lllll) and no extra lines, what is the total value?
15
A frequency table has the following data for ice cream: vanilla (frequency 4), chocolate (frequency 7), strawberry (frequency 5). This ice cream is the most common.
Chocolate
Count the word lengths as data for this sentence: "An apple a day." What is the frequency of words with exactly 1 letter.
1
Turn this non-statistical question into a statistical one: "How many pets does Sarah have?"
"How many pets do the students in our class have?" (Accept similar variations that introduce a group/variablility.)
Ina survey about favourite colours, Blue got lllll lllll ll and Red got lllll llll. How many more people preferred blue over red?
3 (blue->12, red->9; 12-9=3)
If the total frequency of a data set is 30, and three categories have frequencies of 8, 12, and 5, what is the frequency of the fourth and final category?
5 (30-8= 22-12= 10-5= 5)
If you create a frequency table of word lengths for this sentence "Track your data now", what word length has the highest frequency?
4-letters