ID Title Level FTPR Lecture
1 Top store for movie sales easy
30%
2.1
2 Top 3 movie categories by sales easy
47%
2.1
3 Top 5 shortest movies easy
53%
2.1
4 Staff without a profile image easy
67%
2.1
5 Monthly revenue easy
24%
2.2
6 Daily revenue in June, 2020 medium
11%
2.2
7 Unique customers count by month easy
19%
2.2
8 Average customer spend by month easy
22%
2.2
9 Number of high spend customers by month medium
4%
2.2
10 Min and max spend easy
13%
2.2
11 Actors' last name easy
24%
2.3
12 Actors' last name ending in 'EN' or 'RY' easy
30%
2.3
13 Actors' first name medium
13%
2.3
14 Good days and bad days hard
4%
2.3
15 Fast movie watchers vs slow watchers hard
5%
2.3
16 Staff who live in Woodridge easy
72%
2.1
17 GROUCHO WILLIAMS’ actor_id easy
65%
2.1
18 Top film category easy
25%
2.2
19 Most productive actor medium
14%
2.2
20 Customer who spent the most medium
15%
2.2
21 Customer who rented the most medium
20%
2.2
22 Average cost per rental transaction easy
43%
2.3
23 Average spend per customer in Feb 2020 easy
16%
2.2
24 Films with more than 10 actors medium
20%
2.3
25 Shortest film easy
46%
2.3
26 Second shortest film easy
29%
2.3
27 Film with the largest cast easy
27%
2.3
28 Film with the second largest cast medium
25%
2.3
29 Second highest spend customer medium
16%
2.3
30 Inactive customers in May easy
21%
2.3
31 Movies that have not been returned easy
27%
2.3
32 Unpopular movies hard
16%
2.3
33 Returning customers medium
8%
2.3
34 Stocked up movies easy
28%
2.3
35 Film length report easy
26%
2.3
36 Actors from film 'AFRICAN EGG' easy
36%
3.1
37 Most popular movie category easy
17%
3.1
38 Most popular movie category (name and id) medium
18%
3.1
39 Most productive actor with inner join easy
23%
3.1
40 Top 2 most rented movie in June 2020 medium
15%
3.1
41 Productive actors vs less-productive actors hard
6%
3.2
42 Films that are in stock vs not in stock medium
11%
3.2
43 Customers who rented vs. those who did not medium
9%
3.2
44 In-demand vs not-in-demand movies medium
6%
3.2
45 Movie inventory optimization hard
7%
3.2
46 Actors and customers whose last name starts with 'A' easy
32%
3.3
47 Actors and customers whose first names end in 'D'. easy
45%
3.3
48 Movie and TV actors easy
43%
3.1
49 Top 3 money making movie categories medium
19%
3.1
50 Top 5 cities for movie rentals easy
23%
3.1
51 Movie only actor easy
43%
3.2
52 Movies cast by movie only actors easy
13%
3.2
53 Movie groups by rental income hard
11%
3.2
54 Customer groups by movie rental spend medium
21%
3.2
55 Busy days and slow days medium
11%
3.2
56 Total number of actors easy
32%
3.2
57 Total number of actors (with UNION) easy
37%
3.3
58 Percentage of revenue per movie hard
8%
4.1
59 Percentage of revenue per movie by category medium
7%
4.1
60 Movie rentals and average rentals in the same category hard
9%
4.1
61 Customer spend vs average spend in the same store hard
12%
4.1
62 Shortest film by category medium
9%
4.2
63 Top 5 customers by store hard
8%
4.2
64 Top 2 films by category hard
16%
4.2
65 Movie revenue percentiles easy
16%
4.3
66 Movie percentiles by revenue by category medium
19%
4.3
67 Quartile by number of rentals easy
24%
4.3
68 Spend difference between first and second rentals hard
12%
4.4
69 Number of happy customers hard
12%
4.4
70 Cumulative spend easy
14%
4.1
71 Cumulative rentals easy
18%
4.1
72 Days when they became happy customers medium
10%
4.2
73 Number of days to become a happy customer hard
11%
4.2
74 The most productive actors by category hard
11%
4.2
75 Top customer by movie category medium
28%
4.2
76 Districts with the most and least customers easy
11%
4.2
77 Movie revenue percentiles by category easy
20%
4.3
78 Quartiles buckets by number of rentals medium
23%
4.3
79 Spend difference between the last and the second last rentals hard
18%
4.4
80 DoD revenue growth for each store hard
19%
4.4
81 How many people searched on new year's day search engine easy
24%
2.2
82 The top search query on new year's day search engine easy
12%
2.2
83 Top search_query in US and UK on new year's day search engine medium
6%
4.2
84 Click through rate on new year's day search engine medium
10%
2.2
85 Top 4 queries based on click through rate on new year's day search engine hard
6%
2.2
86 Top song in the US spotify easy
19%
2.2
87 Top song in the US and UK spotify medium
10%
3.3
88 Top song report spotify medium
23%
4.2
89 Top 5 artists in the US spotify medium
11%
2.2
90 Top artist report spotify medium
22%
4.2
91 same day friend request acceptance rate spotify easy
11%
3.1
92 Acceptance rate first week of 2021 spotify easy
14%
2.1
93 number of sales for each product this month amazon easy
19%
2.2
94 Top 3 products vs. bottom 3 products amazon medium
6%
3.3
95 Candidate products for subscription amazon hard
11%
2.2
96 Overall acceptance rate social easy
13%
2.2
97 Social influencer social easy
10%
2.2
98 Most popular user social easy
29%
2.2
99 Page recommendation social medium
12%
3.1
100 Advertiser ROI social medium
9%
3.2
101 Average number of visits per user mobile easy
12%
2.2
102 Histogram by visit session duration mobile hard
12%
2.3
103 Median and average session duration by day of the week mobile medium
17%
4.3
104 MAU: Monthly active users mobile easy
19%
3.3
105 Number of days gap between last two actions mobile hard
9%
4.2
106 Mobile vs. web mobile medium
9%
2.2
107 Customer count by platform mobile medium
19%
2.2
108 Free premium membership amazon hard
17%
4.1
109 Top 3 most popular product categories amazon easy
11%
4.2
110 Most popular product by category amazon medium
11%
4.2
111 Second most popular product amazon medium
14%
2.1
112 Top 3 customers amazon easy
30%
2.2
113 Daily cumulative spend amazon easy
9%
4.1
114 Dod revenue change rate amazon easy
13%
4.4
115 Rolling average revenue amazon hard
26%
4.1
116 Top answers day by device amazon easy
14%
4.2
117 Rolling 7 days total answers amazon easy
35%
4.1
118 Daily bookings in the US airbnb hard
5%
3.2
119 Top 2 countries by bookings airbnb hard
6%
4.2
120 First ever booking airbnb hard
7%
4.2
121 Week over week change of first ever bookings airbnb hard
6%
4.4
122 Top country by wow growth airbnb hard
8%
4.2
123 Top listing in the United States, United Kingdom and Canada airbnb medium
8%
4.2
124 Active restaurants by city uber easy
36%
2.2
125 Active restaurants with fewer than 5 trips per city uber easy
14%
2.2
126 Top 3 restaurants uber hard
9%
2.1
127 Average rating after 10th trip uber hard
11%
4.2
128 Completion rate uber easy
23%
2.2
129 Top 3 and bottom 3 courier uber medium
10%
3.3
130 Newly created accounts affirm easy
34%
2.2
131 Churned accounts affirm hard
10%
2.3
132 Top 3 trending countries affirm medium
8%
2.2
133 Small departments robinhood easy
44%
2.2
134 Expensive departments robinhood medium
32%
2.2
135 Unlucky employees robinhood easy
15%
4.2
136 Extremely late orders doordash easy
5%
2.3
137 Extremely late first orders doordash medium
7%
4.2
138 Happy restaurants doordash easy
10%
2.3
139 Poor first delivery experience doordash medium
14%
4.2
140 Daily sales of restaurant 100011 doordash hard
9%
3.2
141 Cumulative sales of restaurant 100011 doordash hard
16%
4.1
142 First order date afterpay easy
34%
4.2
143 Customer purchase report afterpay easy
15%
2.2
144 Third order afterpay medium
10%
4.2
145 Returning customers after first buy afterpay hard
15%
4.2
146 Purchase by platform afterpay easy
13%
2.2
147 2 days streak customers social hard
11%
4.4
148 Most popular video category social medium
12%
4.2
149 fans by video category social easy
30%
2.2
150 Countries with above average customers social easy
10%
3.1
151 Salary report dropbox easy
16%
2.3
152 Salary analysis dropbox easy
23%
2.1
153 Project ROI dropbox easy
18%
2.2
154 Rideshare completion rate lyft easy
22%
2.2
155 Driver with the highest cancellation rate lyft easy
22%
2.3
156 Cancellation rate by unbanned users lyft hard
14%
2.3
157 Number of trips before a driver got banned lyft medium
5%
4.2
158 First trip completion rate lyft medium
21%
4.2
159 Transaction volume from suspended accounts ebay easy
51%
2.2
160 Sellers with no sales by day ebay hard
7%
2.3
161 Biggest sales day ebay easy
19%
2.2
162 Number of orders per brand walmart easy
40%
3.1
163 Average number of orders per brand walmart easy
36%
2.2
164 Orders distribution by brand walmart easy
22%
2.2
165 Session stitching walmart hard
15%
4.2
166 Top 10 customers based on spend growth walmart medium
13%
4.2
167 Top country in video streaming tiktok easy
24%
2.2
168 Average number of streams in the US tiktok medium
13%
3.2
169 Same day streams tiktok easy
29%
2.2
170 Top 3 countries by average watch time tiktok easy
10%
2.2
171 Binge watches tiktok easy
19%
2.2
172 Comments distribution social hard
13%
3.2
173 User Popularity Percentage social medium
5%
2.2
174 Closed accounts social easy
18%
2.2
175 Employees' email account amazon easy
11%
2.1
176 Employees' annual bonus amazon easy
11%
2.3
177 Purchases by platform report amazon medium
9%
2.3
178 Members who worked at both Microsoft and Google linkedin medium
36%
2.3
179 Members who ever moved from Microsoft to Google linkedin medium
35%
3.1
180 Members moved from Microsoft to Google directly. linkedin hard
16%
4.4
181 Users who watched less than one hour of Netflix netflix easy
23%
2.2
182 Top 5 content by number of watchers netflix medium
4%
4.1
183 Top 5 movies by number of watchers netflix easy
33%
2.2
184 Top 5 movies by watch time netflix medium
7%
2.2
185 Top 5 non-English contents by watch time netflix medium
53%
2.2
186 Average comments per question google easy
50%
2.2
187 Comment distribution at Google Forum google easy
50%
2.2
188 Top 1 popular question by department google hard
100%
4.2
189 Campaign activation date twitter medium
0%
4.1
190 Twitter campaign spend report twitter hard
50%
2.2
191 Number of replies by group twitter medium
100%
3.2
192 Number of replies to the original tweet by group twitter medium
100%
2.2
193 Difference of replies by testing groups twitter medium
100%
2.2
194 Daily active users report for new market snap easy - 3.2
195 MoM user growth snap hard - 4.4
196 User segments report snap hard - 2.2
197 Students who didn't finish all subjects snap easy - 2.2
198 Average score per subject snap easy - 2.2
199 Students improvement snap hard - 4.4
200 Last week's absent students snap medium - 2.1
201 Top 3 students for each subject snap medium - 4.2
202 Monthly active paid subscriptions subscription easy - 2.2
203 Top 5 products by country by month search engine easy - 4.2
204 AB testing sanity check search engine easy - 2.2
205 Search results recall search engine medium - 2.2
206 Search results recall by testing group search engine medium - 2.2
207 Results shown rate by group search engine easy - 2.2.1
208 Top 3 urls by testing groups search engine medium - 4.2
209 Card issuer customers count visa easy - 2.2
210 Issuer and merchant report visa easy - 2.1
211 High spenders by issuer visa easy - 2.1
212 Top issuing bank by category visa hard - 2.1
213 Interchange revenue by issuer and merchant category visa easy - 3.2
214 D30 retention rate gaming hard - 2.2
215 Monthly active users gaming hard - 2.2
216 Highest spender gaming hard - 2.2

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