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WorksheetsStatistics 101, WHI
Total questions: 75
Worksheet time: 1hrs 3mins
Median of the first 10 natural numbers
5
6
5.5
11
The mean of first 5 natural numbers
5
15
3
2.5
Which of the following is not a measure of central tendency
Mean
Range
Median
Mode
What is the mode of the data
16, 11, 15, 11, 1, 14, 16,
14, 15
11
16
11, 16
What is size of the class interval
h = 10
h = 5
h = 14
h = 15
The mode of the data 7,5,8,11,5,8,7,2,9,5 is
7
8
7,8
5
In order to find mode of the data identify f0 , f1 , f2
f0 = 15 , f1 = 118 , f2 = 142
f0 = 118 , f1 = 142 , f2 = 127
f0 = 15 , f1 = 18 , f2 = 118
f0 = 15 , f1 = 118 , f2 = 18
In order to find mode of the data identify f1 and L
f 1 = 4 and L = 51
f 1 = 15 and L = 80
f 1 = 15 and L = 71
f 1 = 8 and L = 61
Range of first 10 natural numbers
5
7
9
3
Statistics is for
Data
Information
Presentation
Collection of data and presentation of data
Facts which are numerical or otherwise collected with a definite purpose are called
Information
Statistics
Data
None
The information was collected by the investigator with a definite objective,the data obtained is called
Secondary data
Primary data
Collection
None
The information collected from a source which had already been recorded say from registers is called
Primary information
Primary data
Secondary data
None
Difference between maximum and minimum observation is called
Mean
Mode
Median
Range
Mean is
Mode
Median
Average
Range
0-10,11-20,21-30,31-40 ,the classes are called
Exclusive
Continuous
Inclusive
Boundaries
Mean of 3,5,4,1,7 is
4
5
6
7
Mean of 6,8,4,12,x is 7 then value of x
4
5
6
7
Mode of 3,4,7,2,4,7,6,1,6,8,6,9,6 is
8
9
10
6
Mode of 1,6,4,5,4,6,7,8,6 is
6
5
4
4,6
Median is after arranging the observation in ascending order
Last term
Middle term
First term
None
The mean of x-1,x,x+1
X
2x
3x
4x
Lower limit of class 40-45 is
50
60
40
None
Data is group of values of measurement collected
A.TRUE
B.FALSE
Data can be classified into two types, which are_________
A. Data in tabular
B. Ungrouped data
C. Group data
D. Frequency
Discrete data is obtained by measuring.
A. TRUE
B. FALSE
Continous data is obtained by counting.
A. TRUE
B. FALSE
Which of the data below is continous data?
A. The height of students.
B. The number of capasitors.
C. The number of siblings for each students in class 4 Melati.
D. The number of cars that pass by in an hour.
Which of the following data below is collected by measuring?
A. Mark of Mathematic Quiz for 16 students.
B. Number of goals of 10 netball games.
C. Hobby of 16 students in a class.
D. Temperature of 10 patients in a ward.
Which of the following is continuous data?
A. 2 measurement tapes
B. 35 kilograms
C. 21 books
D. 9 boys
What is the frequency for Ice cream?
A. 5
B. 6
C. 11
D. 16
A part of a population that is used in order to answer a statistical question is known as which of the following?
a subset
a sample
a portion
a grouping
Which of the following is another name for the mean of a data set?
the average
the median
the sum
the middle
Which term below best describes the number at the middle of a data set when put in order?
the mean
the median
the mode
the range
Which of the following is not an example of a statistical question?
How old were people who voted in the 2020 presidential election?
How much weight will a person lose by running one hour each day?
How far will light travel in one second?
How many hours do babies sleep each night?
The standard deviation is a measurement of which of the following?
the center of the data set
the range of the data set
the variability in the data set
the maximum value of the data set
Which of the following is true about the data set {3, 5, 5, 7, 9}?
median > range
mean > median
median = mean
median > mean
According to the following box-and-whiskers diagram, which of the following values represents the lower quartile of this data set?
20
28
13
16
The 15 members of the French Club sold candy bars to help fund their trip to Quebec. The table below shows the number of candy bars each member sold.
When referring to the data, which statement is false?
The mode is the best measure of central tendency for the data.
The median is 53.
The data have two outliers.
The range is 120.
How do we calculate IQR?
Q1 − Q3
Q3 − Q1
Max - Min
Add all the data points then divide by the total number of data points
Given the box plot shown below, which of the following represents the range of this data set?
110
60
40
75
5. It is defined as the specific group that you will collect data from.
A. Population
B. Sample
C. Mean
D. Statistic
2. It is the entire group that you want to draw conclusions about.
A. Parameter
B. Statistic
C. Population
D. Sample
Which function can be used to find mean in Excel?
min()
average()
round()
sum()
Variance measures shows that
What is data?
How much data is included
how far a data set is spread out.
None
What is relationship between two variables called?
Combination
Internship
Correlation
Norelation
depicts amounts frequencies for different categories of data by a series of bars.
pictograph
circle graph
bar graph
line graph
A statement or theory subjected to a test
hypothesis
conclusion
analysis
problem
At Lokmacım the number of lokmas in a bag can vary. Help Ahmet find the mode. 12,10,10,10,13,12,11,13,10
(column) do you look at when finding the critical value?
This symbol denotes the null hypothesis
Null hypothesis
Alternative Hypothesis
H0
Ha
What type of statistical test do we use to compare 2 classes' student biology scores?
2 samples t-test
1 sample t-test
ANOVA
Correlation
If x1, x2, x3,….., xn are the observations of a given data. Then the mean of the observations will be:
Total number of observations/Sum of observations
Sum of observations +Total number of observations
Sum of observations/Total number of observations
None of these
If the mean of frequency distribution is 7.5 and ∑fi xi = 120 + 3k, ∑fi = 30, then k is equal to:
45
35
50
40
The mode and mean is given by 7 and 8, respectively. Then the median is:
1/13
13/3
33
23/3
The mean of the data: 4, 10, 5, 9, 12 is;
8
9
10
15
The median of the data 13, 15, 16, 17, 19, 20 is:
30/2
31/2
33/2
35/2
If AM of a, a+3, a+6, a+9 and a+12 is 10, then a is equal to;
1
2
3
4
The class interval of a given observation is 10 to 15, then the class mark for this interval will be:
11.5
12.5
12
14
The mean of following distribution is:
15.6
17
14.8
16.4
While computing mean of grouped data, we assume that the frequencies are
centred at the class marks of the classes
evenly distributed over all the classes
centred at the upper limits of the classes
centred at the lower limits of the classes
The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below. The number of athletes who completed the race in less then 14.6 seconds is
11
71
82
130
Which is true?
P-Value < 0.05 - there's statistical difference
P-Value < 0.05 - there's no statistical difference
P-Value > 0.05 - there's statistical difference
None of the above
The weight of the average 6th grade boy is 89 lbs. The principal of the school feeds them steak for first semester to see if their weight changes. What are the null and alternate hypotheses?
H0: μ = 89
H1: μ = 89
H0: μ = 89
H1: μ > 89
H0: μ = 89
H1: μ < 89
H0: μ = 89
H1: μ ≠ 89
What is the degree of freedom if the sample size is 20?
21
19
20
18
When testing with α=0.01 you get p=0.12 . Your decision should be
Reject H0, there is a significant difference
Accept H0, there is NOT a significant difference
Reject H0, there is NOT a significant difference
Accept H0, there is a significant difference
A fast food outlet claims that the mean waiting time in
line is less than 3.5 minutes. A random sample of 20
customers has a mean of 3.7 minutes with a standard
deviation of 0.8 minute. If α = 0.05, test the fast food
outlet's claim.
Reject Ho
Reject Ha
Fail to reject Ho
Fail to reject Ha
Another word for mean is...
sum
product
average
equation
Find the mean of the numbers below:
4, 9, 7, 10, 5
5
6
7
8
12, 5, 9, 18, 22, 25, 5
State whether this is a one or two-tailed test.
One-Tailed
Two-Tailed
What is an one-sample t-test used for?
Comparing means from a sample and a population
Comparing means from two separate samples
Comparing means from two related samples
Comparing means from more than two samples
