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Year 8 Data Quiz 1
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Each member of a club is asked to take boxes of chocolates to sell. The table below shows the number of boxes taken by each member.
1 point
From the table the total number of books taken is
10
22
33
36
Clear selection
For the dot plot shown below, the mode is:
1 point
no mode
4
4.5
7
Clear selection
What is the median of the following numbers? 3, 6, 7, 5, 3
1 point
3
6
5
no median
Clear selection
One extra number is added to the data set 20, 16, 50, 10 and this causes the mean to change to 20. What is the number?
1 point
40
4
20
56
Clear selection
Which budget item costs the Riveras half as much as utilities?
1 point
clothing
transportation
recreation
rent
Clear selection
The average age of the two Bell children is 5. The average age of the three Ring children is 15. The average age of the five children together is
1 point
4
9
10
11
Clear selection
Which of the following can be correctly concluded from this graph?
1 point
The share price doubled on the first day.
The shares had no value at the end of the second day.
The final share price was greater than the original share price.
The shares halved their value on one of the days
Clear selection
The number of telephone calls made on Saturday by 25 students is shown in the dot plot. What is the range of the data shown?
1 point
8
6
5
1
Clear selection
The mean of 3 scores is 7 and the mean of 2 other scores is 12. The total for the 5 scores is
1 point
45
19
90
55
Clear selection
There are 2 modes for the data presented in the stem-and-leaf diagram. What are the modes?
1 point
4 and 6
5 and 7
26 and 32
25 and 37
Clear selection
The monthly wages of 6 people who work for a computer business are $4560, $4230, $4670, $5850, $3790, $4500. The median wage is
1 point
$4500
$4530
$4560
$5360
Clear selection
Betty counted the number of visitors to a park over the past week. She displayed the data in the graph below. Betty noticed that half of the total number of visitors came over two days. Which days were these?
1 point
Monday and Thursday
Friday and Saturday
Friday and Sunday
Saturday and Sunday
Clear selection
The sector graph shows mobile phone sales by brand. Which of these statements is correct
1 point
Together brands Q and R made up just over one-quarter of the sales
More brand S were sold than all of the other brands combined.
Fewer brand R were sold than brand T.
Just less than 90% were brand P.
Clear selection
A class did a survey of the dates of their birthdays. The graph shows the number of students whose birthdays fell in each three months of the year. How many students have a birthday in the second half of the year?
1 point
4
5
11
13
Clear selection
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