KIỂM TRA 1 TIẾT LẦN I HKII ĐẠI SỐ 7 12_13 (BẢN TIẾNG ANH)
BC JUNIOR HIGH SCHOOL 2012-2013
Grade 7th Statitics Test :
Survey of 20 students was conducted to find
out how many books they had read during the past three months (including books
for school). The results from those 20 students are shown below.
2, 4, 5, 1, 3, 2, 5, 6, 1, 2, 4, 3, 6, 10, 12,
10, 2, 8, 6, 7
a)What is the data?
b)What is number of data ?
c)How many distinguish data values are there?
d)Construct the frequency tabe.
e)Find the mean of data values.May mean be the value of
data?
f)Find the mode.
g)Construct a line
segment diagram.
h)What is the percentage of below 5 book reading?
i)Give some statements.
Made by Mr. Vịnh
