Statistical Data

diagram show a frequency table consists of a group of 50 students. Find the value of x

the bar chart shows the number of children in each family. How many family with 2 children?

the bar chart shows the number of children in each family. If the number of families which have 4 children is 25% more than the number of families which have 3 children. How many family with 4 children?

the pictogram shows the number of emails Chesney received over a week.

How many emails did Chesney received in Thursday and Sunday?

which two days did Chesney received the most number of emails?

• monday, friday

• monday, tuesday

• wednesday, friday

• sunday, saturday

how many boys are there in the class?

the masses of J2E3 students are represented in the stem-and-leaf diagram. Calculate the percentage of boys whose mass is at least 61kg.

• 68.1

• 68.2

• 68.3

• 68.4

what is the difference in the number of visitor from 1200 to 1300

at what time was there the least number of visitors?

what is the name of this graph?